“Had it growing up,”
We had it often in the ‘50s and ‘60s. It was cheap then (or we wouldn’t have had it). Now, it seems to be pretty expensive.
I used to like sandwiches of fried Spam and mustard.
Same, for me the 60s and 70s. Fried spam with mustard sandwiches come immediately to mind.
Never ate Spam when I was a kid, but my wife likes sandwiches of Hot & Spicy Spam on white bread. She fries the Spam very crisp, and uses mayo only, no mustard. I’ve tried it, but not my favorite, even with mustard.