How many grams of coffee for a double shot of espresso?

In the world of barista basics, the espresso dose is the foundation of every drink. While historical Italian standards often cited 14 to 16 grams for a double shot, the modern specialty coffee movement has shifted toward 18 to 20 grams. This increase in coffee weight allows for a more robust extraction, providing the depth and complexity that define high-quality espresso. When dialing in your machine, the dose is your primary variable for controlling the strength and body of the final cup.

Measuring by weight rather than volume is the most critical habit for any home barista. Because espresso is topped with crema—a layer of CO2 foam—visual volume is notoriously unreliable. A shot that looks like 60 milliliters in a glass might weigh significantly less depending on the freshness of the beans and the roast profile. By using a digital scale to measure your dry coffee weight and your liquid yield, you remove the guesswork from your espresso recipe.

Most professionals aim for a 1:2 brew ratio, meaning if you start with 18 grams of dry coffee, you should aim for approximately 36 grams of liquid espresso in your cup. This ratio is a starting point, not a rigid law. If your shot tastes thin or sour, you might increase your dose slightly or grind finer to increase resistance. Conversely, if the shot is bitter or harsh, a slightly lower dose or a coarser grind can help balance the extraction.

Ultimately, the 'correct' dose is the one that tastes best to you. Different bean densities and roast levels will behave differently in your portafilter basket. A light roast might require a slightly higher dose to achieve the desired body, while a dark roast might be more soluble and require less. Treat these numbers as a baseline, and use your palate as the final judge to refine your daily routine.