QuickCheck: Was bread once used as an eraser?

OUR parents used to say, “Don’t play with your food!” but they never said anything about not using them as stationery.

Rye, wholewheat, baguette, sourdough and so many other versions, bread has been one of the world’s staple foods for as long as we know. But imagine if it was used as stationery at one time, like an eraser, for example.