What is the difference between iced coffee and cold brew?

While both iced coffee and cold brew are refreshing ways to enjoy coffee, they are fundamentally different beverages. Iced coffee is essentially hot-brewed coffee that has been chilled. Because it is brewed with hot water, it undergoes the same chemical extraction process as your standard morning cup, which highlights the coffee's acidity and bright, aromatic notes. When poured over ice, it is often diluted, which is why many recipes call for brewing it at a higher concentration to maintain flavor.

Cold brew, by contrast, is a completely different extraction method. By using cold or room-temperature water, the extraction process is much slower, often taking 12 to 24 hours. This cold extraction is less efficient at pulling out certain acids and bitter compounds, which is why cold brew is famous for its smooth, mellow, and naturally sweet taste. It is also typically much more concentrated than iced coffee, often requiring dilution with water or milk before serving.

Choosing between the two often comes down to your flavor preference. If you enjoy the bright, complex acidity of a light-roast coffee, iced coffee is usually the better choice, as the hot water is necessary to extract those delicate notes. If you prefer a low-acid, heavy-bodied, and chocolatey or nutty profile, cold brew is likely to be more satisfying. Cold brew is also very convenient, as you can make a large batch in advance and keep it in the fridge for several days.

In practice, both methods offer unique benefits. Iced coffee is quick to make and highlights the nuances of the bean, while cold brew is a 'set it and forget it' method that produces a consistently smooth and refreshing drink. Experimenting with both will help you understand how temperature and time influence the final cup, allowing you to choose the perfect cold coffee for any occasion.