How do you know when menudo has gone bad?

Menudo has gone bad if it develops an off or sour smell, shows any signs of mold, or has an unusual color or texture. Additionally, if the broth appears cloudy or there are changes in consistency, it’s best to discard it. Always check the expiration date if it’s store-bought, and if you’re unsure, it's safer to err on the side of caution and throw it away.