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Who Makes The
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Coffee Answers

EVERYTHING YOU EVER WANTED TO KNOW ABOUT COFFEE.

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Six coffee questions, answered without the attitude.

Plain-English answers drawn from the Specialty Coffee Association, World Coffee Research and the National Coffee Association. These explain general coffee knowledge, not the scores or identity of any untested coffee. The full searchable answer bank is available below when you need something more specific.

Are tasting notes ingredients added to coffee?

Usually not. Notes such as citrus, cocoa or jasmine describe aromas and flavors a taster perceives in brewed coffee; they are not an ingredient list. Flavored coffees are a separate category. A roaster's tasting notes are its descriptions, not proof that we independently tasted that bag.

Why this matters: A descriptive assessment records perceived sensory characteristics. It is separate from an evaluator's judgment of quality.

Explore the flavor wheelSource: Specialty Coffee Association — Coffee Value Assessment

What is the difference between washed, natural and honey coffee?

In broad terms, washed coffee is depulped and its mucilage is removed before drying; natural coffee dries inside the whole cherry; honey coffee is depulped but dried with some mucilage remaining. These process labels do not guarantee a particular flavor or a higher score.

Why this matters: Processing choices influence fermentation and drying, but variety, ripeness, handling and roasting also affect the cup.

Compare coffee processesSource: National Coffee Association — Coffee Processes

Is Arabica a coffee variety?

Arabica is a species, Coffea arabica. Bourbon, Typica, and many other named lines are varieties within that species. A variety name can help explain agronomic traits, but it cannot identify a farm or establish that a particular lot tastes a certain way.

Why this matters: Growing environment, plant health and postharvest decisions matter alongside genetics.

Understand coffee geneticsSource: World Coffee Research — Arabica catalog

Is dark roast stronger than light roast?

Dark roast can taste more bitter or intensely roasted, but that does not by itself mean it contains more caffeine. Roast color labels are not uniform across companies. Compare the same coffee brewed at the same dose before attributing flavor or strength to roast alone.

Why this matters: Roast degree affects flavor, while brewing dose and recipe affect the concentration in your cup.

Read the roasting guideSource: National Coffee Association — Coffee Roasts

How should I store whole-bean coffee?

Keep beans in an airtight, opaque container in a cool, dry, dark place, away from moisture and heat. Grind just before brewing when practical. Freshness depends on the roast, packaging and how the coffee has been stored; a single universal peak-freshness date is not reliable for every bag.

Why this matters: Air, light, warmth and moisture all speed flavor loss or create storage problems.

Explore brewing methodsSource: National Coffee Association — Storage and Shelf Life

Can one tasting score prove which coffee is best?

No. A score reflects a particular evaluation method, sample and taster or panel. The Specialty Coffee Association distinguishes sensory descriptions, judgments of quality, physical characteristics and information such as origin traceability. We publish our own scores only for coffees actually brewed and reviewed by us.

Why this matters: A competition result, a roaster's flavor description and an independent tasting score answer different questions; they should not be converted into one universal ranking.

How we research and rate coffeeSource: Specialty Coffee Association — Coffee Value Assessment

Research update · Genetics

Is Pink Bourbon actually a Bourbon?

Genetic tests reported by Cafe Imports in 2017 and 2023 indicate that sampled Pink Bourbon material belongs closer to Ethiopian landrace ancestry than the traditional Bourbon variety. The older Red × Yellow Bourbon origin story should not be repeated as established fact.

A farmer or roaster may use Pink Bourbon as the trade name for a pink-cherry coffee; a name and cherry color do not prove genetic parentage. Some tested samples had mixed markers, so the identity of any particular lot still needs evidence.

Read the corrected comparisonSource: Cafe Imports — Pink Bourbon genetics report (2023)

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CAFFEINEAnswer

How much caffeine is too much per day?

For most healthy adults, the FDA and other health organizations suggest that up to 400 milligrams of caffeine per day—roughly four cups of brewed coffee—is generally safe. However, individual sensitivity varies significantly based on genetics, body weight, and tolerance. Exceeding this limit can lead to jitters, anxiety, insomnia, and increased heart rate.

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Is caffeine content determined by the bean or the roast?

Caffeine content is primarily determined by the coffee species, not the roast level. Arabica beans naturally contain about half the caffeine of Robusta beans. While roasting causes the bean to lose mass and volume, the absolute amount of caffeine remains relatively stable, meaning the difference in caffeine between a light and dark roast is negligible.

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How much caffeine is in decaf coffee?

Decaf coffee is not entirely caffeine-free; it typically contains between 2 and 5 milligrams of caffeine per cup. By international standards, the decaffeination process must remove at least 97% of the caffeine from the original green coffee beans. While levels are significantly lower than regular coffee, they are not zero.

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Does the brewing method change the caffeine content?

Yes, the brewing method significantly impacts the caffeine content in your cup. Factors like water temperature, contact time, and the coffee-to-water ratio determine how much caffeine is extracted. Generally, methods with longer contact times, such as French press or cold brew, extract more caffeine than faster methods like espresso, assuming equal amounts of coffee are used.

CAFFEINEPour-overEspresso
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Does Robusta have more caffeine than Arabica?

Yes, Robusta coffee beans contain significantly more caffeine than Arabica beans. On average, Robusta contains nearly twice the caffeine content of Arabica, typically ranging from 1.7% to 4.0% by dry weight, compared to Arabica’s 0.8% to 1.5%. This higher caffeine concentration is a natural defense mechanism for the Robusta plant against pests and environmental stressors.

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Why does caffeine make me jittery?

Caffeine makes you jittery because it is a central nervous system stimulant that blocks adenosine receptors in the brain, which normally signal tiredness. This triggers the release of adrenaline, increasing your heart rate and blood pressure. For those with high caffeine sensitivity, even moderate amounts can lead to an over-stimulated 'fight or flight' response, manifesting as jitters, anxiety, or restlessness.

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How much caffeine is in a single shot of espresso?

A single shot of espresso typically contains between 60 and 80 milligrams of caffeine. However, this amount can vary significantly based on the coffee species used (Arabica vs. Robusta), the dose of dry coffee, the roast level, and the specific extraction parameters. Because espresso is a concentrated brew, it delivers a high density of caffeine in a small volume.

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How long does caffeine stay in your system?

Caffeine typically has a half-life of three to five hours in healthy adults. This means that five hours after consuming a cup of coffee, half of the caffeine remains in your bloodstream. While the initial effects peak within 30 to 60 minutes, the substance can remain detectable and continue to exert physiological effects for up to 10 hours or more.

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Does cold brew have more caffeine than hot coffee?

Cold brew often has more caffeine than hot coffee, but it depends on the brewing ratio. Because cold brew uses a much higher coffee-to-water ratio and a longer extraction time, the resulting concentrate is typically very high in caffeine. However, if you dilute your cold brew concentrate with water or milk before drinking, the caffeine level per serving may be comparable to hot coffee.

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Does decaf coffee have zero caffeine?

No, decaf coffee is not completely caffeine-free. While the decaffeination process removes at least 97% of the caffeine, a small amount remains in the beans. A typical cup of decaf coffee usually contains between 2 to 5 milligrams of caffeine, compared to 95 to 200 milligrams in a standard cup of regular coffee.

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Does light roast have more caffeine than dark roast?

Light roast coffee contains slightly more caffeine by volume than dark roast, but the difference is often negligible when measured by weight. During the roasting process, beans lose mass and expand, so a scoop of light roast beans is denser and contains more caffeine than a scoop of dark roast beans, which have expanded more and lost more mass.

CAFFEINELight roastMedium roast
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How much caffeine is in a cup of tea vs coffee?

A standard 8-ounce cup of brewed coffee typically contains 95–200 mg of caffeine, while an 8-ounce cup of black tea contains 40–70 mg. While coffee generally provides a higher concentration of stimulants, the exact caffeine in tea and caffeine in coffee varies significantly based on brewing time, water temperature, and the specific variety of leaves or beans used.

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Can caffeine cause anxiety?

Yes, caffeine can cause anxiety, particularly in higher doses. As a central nervous system stimulant, it triggers the body's "fight or flight" response, which can manifest as caffeine jitters, rapid heart rate, and restlessness. These caffeine side effects often mirror the physical symptoms of anxiety, making coffee and nerves a common concern for those with high caffeine sensitivity.

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How does caffeine affect heart rate?

Caffeine affects heart rate by stimulating the central nervous system and blocking adenosine receptors, which can lead to a temporary increase in blood pressure and heart rate. While moderate consumption is generally safe for most, those with high caffeine sensitivity may experience palpitations or a rapid heartbeat, which are common caffeine side effects.

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How much caffeine is in a cold brew?

Cold brew typically contains more caffeine than standard drip coffee because it uses a much higher coffee-to-water ratio. While a standard cup of drip coffee might have 95–150 mg of caffeine, a cold brew concentrate can contain significantly more. However, the final caffeine content depends heavily on the dilution ratio used when serving the drink.

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How does caffeine block adenosine?

Caffeine works by acting as an antagonist to adenosine receptors in the brain. Adenosine is a chemical that builds up throughout the day to promote sleepiness; by binding to these receptors without activating them, caffeine prevents adenosine from signaling the brain to feel tired, effectively maintaining alertness and increasing the release of other neurotransmitters like dopamine.

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What is the half-life of caffeine?

The average half-life of caffeine in a healthy adult is typically 4 to 5 hours. This means that after this duration, half of the caffeine you consumed remains in your system. However, caffeine metabolism varies significantly based on factors like age, pregnancy, liver health, and individual genetics, which can extend this duration considerably.

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Is caffeine withdrawal real?

Yes, caffeine withdrawal is a very real phenomenon. When you regularly consume caffeine, your brain adapts to its presence; when you stop, you may experience symptoms like throbbing headaches, fatigue, irritability, and difficulty concentrating. These symptoms typically begin 12 to 24 hours after your last dose and can last for several days as your body readjusts.

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What is the daily recommended limit for caffeine?

For most healthy adults, the daily recommended limit for caffeine is up to 400 milligrams, which is roughly equivalent to four 8-ounce cups of brewed coffee. While this is considered safe for the general population, individual tolerance varies, and pregnant individuals or those with specific health conditions should consult a doctor for personalized guidelines.

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How much caffeine is in a shot of espresso?

A standard single shot of espresso typically contains between 60 and 80 milligrams of caffeine. However, this amount can vary significantly based on the coffee variety, the dose of dry coffee used, and the extraction time. Because espresso is a concentrated beverage, it delivers a high dose of caffeine in a very small volume.

CAFFEINEEspressoSpecialty coffee
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Does dark roast have more caffeine?

No, dark roast does not have more caffeine; in fact, caffeine levels remain remarkably stable regardless of the roasting process. The perceived difference in caffeine content is almost entirely due to how you measure your coffee. Because dark roast beans are less dense, measuring by volume (scoops) versus weight (grams) will yield different results, but the actual chemical difference is negligible.

CAFFEINELight roastMedium roast
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Does the brewing method change caffeine content?

Yes, the brewing method significantly impacts caffeine levels, primarily through variations in concentration, grind size, and water-to-coffee ratios. While caffeine is highly water-soluble and extracts quickly, methods like espresso create a more concentrated beverage per milliliter, whereas drip or immersion methods often result in higher total caffeine per serving due to larger volumes and longer contact times.

CAFFEINESpecialty coffeeCupping
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How much caffeine is in a cup of cold brew?

Cold brew coffee typically contains a high amount of caffeine, often ranging from 150 to 200 milligrams per 12-ounce serving. Because cold brew is usually prepared as a concentrate with a high coffee-to-water ratio and long steeping times, it can be more potent than standard drip coffee, though the exact amount depends on the dilution and brewing time.

CAFFEINECold brewPour-over
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Does decaf coffee have any caffeine?

Yes, decaf coffee still contains a small amount of caffeine. The decaffeination process is highly effective but rarely removes 100% of the caffeine. Most decaffeinated coffees retain about 1% to 3% of their original caffeine content, which typically translates to 2 to 5 milligrams per cup, compared to 95 to 150 milligrams in a standard cup of regular coffee.

CAFFEINEDecafSpecialty coffee
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Do robusta beans have more caffeine than arabica?

Yes, robusta beans contain significantly more caffeine than arabica. On average, robusta beans have 2.2–2.7% caffeine by dry weight, while arabica beans typically contain 1.2–1.5%. This higher caffeine content in the coffee species acts as a natural pesticide, contributing to the plant's resilience and the bean's characteristically bitter, intense flavor profile compared to the smoother arabica.

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Does espresso have more caffeine than drip coffee?

A single shot of espresso contains less total caffeine than a standard 8-ounce cup of drip coffee. While espresso has a higher caffeine concentration per ounce, you consume a much larger volume of liquid when drinking drip coffee. Consequently, an 8-ounce drip coffee typically delivers more total caffeine than a single 1-ounce espresso shot.

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Does decaf coffee have caffeine?

Yes, decaf coffee still contains a small amount of caffeine. The decaffeination process typically removes 97% to 99% of the caffeine, but it is not a complete removal. While a standard cup of coffee might contain 95–200mg of caffeine, a cup of decaf usually contains between 2mg and 15mg, depending on the beans and the process used.

CAFFEINEDecafSpecialty coffee
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How does brewing method affect caffeine levels?

Brewing methods affect caffeine levels by changing the extraction time, the water-to-coffee ratio, and the temperature of the water. Methods that use more coffee grounds or longer contact times generally produce higher caffeine concentrations. Because caffeine is highly soluble, the efficiency of your specific brewing device will dictate how much of the available caffeine is pulled into your cup.

CAFFEINESpecialty coffeePour-over
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Does cold brew have more caffeine?

Cold brew generally has a higher caffeine concentration than drip coffee because it uses a significantly higher coffee-to-water ratio. While the cold steeping time is much longer, the lower temperature extracts compounds more slowly. However, because cold brew is often served as a concentrate, your total caffeine intake ultimately depends on how much you dilute it before drinking.

CAFFEINECold brewSpecialty coffee
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Does grind size affect caffeine extraction?

Yes, grind size significantly affects caffeine extraction by altering the surface area exposed to water. Finer grinds provide more surface area, allowing for faster and more efficient extraction of caffeine and other solubles. Conversely, coarser grinds have less surface area, which generally results in a slower extraction rate and potentially lower total caffeine content in the final cup.

CAFFEINEPour-overEspresso
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Is caffeine destroyed by roasting?

Caffeine is highly stable during roasting and is not significantly destroyed by the process. While extreme heat can cause negligible degradation, caffeine content remains largely intact regardless of roast level. The common perception that dark roasts have less caffeine is usually a misunderstanding caused by measuring beans by volume rather than by weight.

CAFFEINELight roastMedium roast
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Which coffee bean has the most caffeine?

Robusta beans contain significantly more caffeine than Arabica beans. On average, Robusta contains about 2.2% to 2.7% caffeine by weight, while Arabica typically contains between 1.2% and 1.5%. This higher caffeine content acts as a natural defense mechanism for the Robusta plant, helping it survive in lower-altitude, pest-prone environments.

CAFFEINEArabicaRobusta
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Does cold brew have more caffeine than drip coffee?

Cold brew often has more caffeine than drip coffee, but this depends entirely on the coffee-to-water ratio used. Because cold brew is typically made as a highly concentrated extract, it contains more caffeine per ounce than standard drip coffee. However, when diluted to a standard drinking strength, the caffeine content is often comparable to or slightly higher than hot-brewed coffee.

CAFFEINECold brewWater
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Is caffeine bad for you?

For most healthy adults, caffeine is not bad for you when consumed in moderation, typically defined as up to 400 milligrams per day. While caffeine safety is well-documented, excessive intake can lead to caffeine side effects like anxiety, insomnia, or heart palpitations. Understanding your personal tolerance is key to balancing the potential coffee benefits with individual health risks.

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Does roasting destroy caffeine?

No, roasting does not significantly destroy caffeine. Caffeine is a highly stable compound that survives the temperatures used in coffee roasting. While minor degradation can occur, it is negligible. The perceived difference in caffeine content between roast levels is primarily due to changes in bean density and volume, not the actual loss of the caffeine molecule itself.

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How much caffeine is too much?

For most healthy adults, a daily caffeine intake of up to 400 milligrams—roughly four cups of brewed coffee—is considered safe. However, caffeine safety is highly individual; experts often recommend limiting intake to 200 milligrams in a single sitting to avoid adverse effects like jitters, increased heart rate, or sleep disruption.

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What is the caffeine content of instant coffee?

Instant coffee generally contains less caffeine than brewed coffee, typically ranging from 30 to 90 milligrams per 8-ounce cup. Because the manufacturing process involves dehydrating brewed coffee, the final caffeine amount depends on the original bean variety and the concentration of the powder used, but it is consistently lower than a standard cup of fresh drip coffee.

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Can you overdose on caffeine?

Yes, it is possible to overdose on caffeine, though it is rare from drinking coffee alone. Toxicity typically occurs at very high doses, often exceeding 5 to 10 grams, which is far beyond what a typical coffee drinker consumes. Symptoms of excessive intake include rapid heartbeat, tremors, severe headaches, and in extreme cases, seizures or cardiac issues.

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Is caffeine addictive?

Yes, caffeine is considered physically addictive. Regular consumption leads to physical dependence, where the body adapts to the presence of the stimulant. If you stop consuming it suddenly, you may experience withdrawal symptoms such as headaches, fatigue, irritability, and difficulty concentrating, which typically peak within 20 to 51 hours after your last dose.

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Which coffee has the most caffeine?

Robusta coffee beans contain the highest caffeine content, typically holding nearly double the amount found in Arabica beans. While Arabica is prized for its nuanced flavor, Robusta’s higher caffeine concentration acts as a natural pest defense. To maximize your caffeine intake, look for 100% Robusta blends or single-origin Robusta, as these will consistently provide the strongest caffeine kick per cup.

CAFFEINEArabicaSpecialty coffee
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How does caffeine affect sleep?

Caffeine affects sleep by blocking adenosine receptors in the brain, which are responsible for signaling sleepiness. Because caffeine has a half-life of several hours, consuming it in the afternoon or evening can significantly delay sleep onset, reduce total sleep time, and decrease sleep quality. For better rest, it is generally recommended to avoid caffeine at least six to eight hours before bedtime.

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What is the caffeine content of espresso?

A standard single shot of espresso typically contains between 60 and 80 milligrams of caffeine. However, the exact caffeine content can vary significantly based on the coffee variety, the dose of ground coffee used, and the extraction time. Because espresso is highly concentrated, it delivers a higher density of caffeine per ounce compared to drip coffee.

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How does caffeine work in the brain?

Caffeine works by blocking adenosine receptors in the brain. Adenosine is a neurotransmitter that builds up throughout the day to signal fatigue and promote sleep. By binding to these receptors without activating them, caffeine prevents the brain from receiving the 'tired' signal, effectively masking feelings of sleepiness and increasing alertness and focus.

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Is there more caffeine in cold brew?

Cold brew often contains more caffeine than hot coffee, but this is primarily due to the high coffee-to-water ratio used in the brewing method rather than the temperature. Because cold brew is typically prepared as a concentrated extract, it uses significantly more coffee grounds per unit of water than standard drip coffee, resulting in a higher caffeine concentration before dilution.

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What is the caffeine content of Robusta vs Arabica?

Robusta coffee beans typically contain nearly double the caffeine content of Arabica beans. On average, Robusta beans have about 2.2% to 2.7% caffeine, while Arabica beans contain approximately 1.2% to 1.5%. This difference is a key factor in the distinct flavor profiles and the historical use of these two primary coffee species in the industry.

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