Brew Strong Coffee at a Lower Temperature to Make It Taste Less Bitter

There was a time when I used to like the taste of dark roasted coffee, but over the years that roasty bold flavor that I used to enjoy began to taste bitter and ashy. This summer I decided to revisit my old dark roasted friend to see if we could improve our relationship.

Source: Hacking Dark Roast – Tips on Brewing a Better Bold Coffee

You should use a coarser grind, or increase the dose if you’re over-extracting. Using a particularly low water temperature may cause under-extraction, or an unpleasantly sour cup.