One time, I made cornbread with the intention of eating it for breakfast the rest of the week. About four days in, I ate a chunk on the way to work, and noticed a strange, citrus flavor in the cornbread.
"Huh", I thought, "I must have spilled some of my lemonade when I put the glass back in the fridge last night. Tastes interesting, though; maybe I'll put some lemon in the batter of my next batch."
I got home that night eager to try another piece of that happy accident. As I cut through it, I realized there was a spot of green & white mold on the bottom. From this, I learned two things:
1. Condensation on the inside of a loaf pan, plus sugars and a lack of preservatives equals an incubator for mold.
2. Mold is apparently high in citric acid.
"I've always thought pastrami was the most sensuous of the salted cured meats."