Can coconut milk go bad?

Yes, coconut milk goes bad over time. Unopened canned or carton coconut milk remains shelf-stable until its expiration date. However, once opened, exposure to oxygen and airborne bacteria causes it to spoil fairly rapidly. Opened canned coconut milk lasts 4 to 6 days in the refrigerator when transferred to an airtight container. Opened carton coconut milk lasts about 7 to 10 days chilled. Signs of bad coconut milk include a sour or off-putting odor, severe separation that doesn’t blend, dark spots, pinkish discoloration, or mold. If it smells sour or tastes bitter, discard it immediately.an coconut milk go bad?