Epsom Salt, 3 lb

Epsom salt (magnesium sulfate) is used to add sulfate ions to the brewing water, which can enhance the perceived bitterness of hops and create a drier, crisper mouthfeel in the finished beer, often used at lower levels than other salts like gypsum; however, too much magnesium can lead to a sour or bitter taste, so careful dosage is key