Just remembered another food related "disappointment"; this one rather minor but it still sticks with me.

Mom would often use Green Giant (r) button mushrooms. These came brined (or something like that) in a small jar; rubbery texture and vile taste. Typically used in spaghetti sauce. Hadn't had them for decades until I stayed at a B&B in York and found them served as part of a traditional English breakfast. Memories - not pleasant ones - flooded back.