Not sure if that taco sauce in the back of the fridge is still okay to eat? According to the Table of Condiments That Periodically Go Bad, if it is older than 2 years it is probably time to throw it away.
Alternatively, StillTasty claims to be “Your Ultimate Shelf Life Guide.” StillTasty is much more comprehensive than the Table of Condiments and might actually save you from eating something you’d regret.
About three years ago, a student brought in a jar of Kraft butterscotch ice cream topping…with a “discard” date of 1982. On a dare, I ate a spoonful.
Indistinguishable from the jar opened only last week. Okay, maybe a little chewier….
I’m sure the same applies to mayo….