How deflationary would it be to use chocolate coins for currency?

Ive been thinking about inflation, and it occurred to me, that creating a money sink would be useful, but obviously governments aren't keen to do this. Over Christmas, I solved the problem.

If we used chocolate coins, currency would naturally decay whenever people get hungry, driving prices down.

My concern is that if we set the value of coins to size wrong then either all coins would be eaten or never eaten.

Maybe we should make notes out of cheese?