Lasagne batteries hit the front page of reddit every couple of months. That's where I learned about galvanic corrosion in general a couple of years ago.

I know tomato (acidic) will make holes in aluminum foil but I didn't know more than that.

I guess today's my day: https://xkcd.com/1053/

On a related note and a slightly larger scale:

https://en.m.wikipedia.org/wiki/Galvanic_anode