How Do You Know If Head Lettuce Is Bad?
Head lettuce can start to go bad if it becomes slimy, smelly, or discolored. Check the leaves for brown spots, mold, or wilting, and if the stem looks mushy or the texture of the lettuce feels slimy, it is time to discard it. Additionally, if there is a sour or unpleasant odor, it is also a sign that it has started to spoil.