For example, if one of the problems with your coffee is that it tastes way too sour, that means you aren’t giving the beans long enough to extract and develop their rich, complex flavor. On the other hand, if it is too bitter, you probably have the opposite problem and your let your coffee extract too much. Of course some problems with your coffee aren’t so easy to diagnose, but if you at least know that the off flavor could be from poor water, low quality coffee, dirty coffee equipment or other issues, at least you can experiment to figure out how to fix it. How to Fix What’s Wrong With Your Coffee | Serious Eats
