My first communion, I hadn’t tasted one of them before and thought it was like a piece of paper/cardboard. While I don’t recall spitting it out, it was a bad moment and I clearly recall sitting in the pew really not liking it.
No longer a Catholic, but even in my denomination I’m hesitant due to that memory!
Before I made my first communion, during instruction, we all got to try an unconsecrated wafer so that we could learn what to expect.
I’ve always wondered how they are made.