How Do You Know If Lettuce Has Gone Bad?
You can know if lettuce has gone bad by looking for the signs of spoilage, such as sliminess, browning or darkening, mushiness, or a foul odor. If the lettuce appears wilted, has a mushy texture, or smells sour or strong, it is likely past its prime and should be discarded. Additionally, if there are any signs of mold or discoloration, it is best to err on the side of caution and throw it away.