I just found an old jar of Beef Bouillon cubes and although there is no expiration date, I'm a bit skeptical about using them - do they go bad?
- the jar was tightly sealed and stored in a cool, dry area
- the bouillon cubes don't smell spoiled in any way
- the cubes aren't off-color
- are most likely under 2 years old
then they should be safe. Bouillon can keep for up to 2 years according to stilltasty.com. So, if you think they've been hiding out in the cupboard for over 2 years, I'd toss them.