Why do you recommend brewing with 175°F (80°C) water for dark roasts and 185°F (85°C) for medium and light roasts?

All of our tasters agreed that coffee brewed at these temperatures tasted the best. These temperatures deliver smooth, rich brews without the bitterness and acidity that come with using hotter water. One of the advantages of the AeroPress is the user controls all the brewing process variables including the temperature of the water used. We recommend brewing with water of different temperatures to determine one's personal preference.