Eggshells Are The Ultimate Fix For Overly Bitter Coffee - Chowhound

First, it's important to look at why a cup of coffee — campfire-brewed or otherwise — tastes bitter in the first place. A range of acids called chlorogenic acid lactones are responsible for the bitterness and harsh tastes in coffee. To counter the acidity, you'll need to add a basic chemical, which can "soak up" the acidity and lower the overall pH of the coffee. Advertisement Luckily, eggshells, composed…