Is it like the one in Alice in WONDERLAND? When you think about it, there are actually a lot of food and size concepts in that book.
There's the famous "Eat me" and "Drink me" items:
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There's the Tea Party with the Mad Hatter where Alice never seems to get anything to eat or drink:
There's the mushroom (complete with Caterpillar and his hookah) where one side makes you larger and one side makes you smaller:
And of course, we have the scene where Alice grows to an enormous size, and only can shrink when she eats pebbles that are thrown at her and turn into cakes:
No wonder Alice is confused! I kind of lived this life for years...bigger then smaller, then repeat. Now I'm 8 pounds away from a number I hardly remember. Today I put on a pair of pants that started with a "1" (size 18). All I can say is...I'm grinning...like the Cheshire Cat. :-)