Limit purchases to basic food items, no steaks, no prefab frozen crap, store brands and bulk items only.
No sodas, no candy, no ice cream, etc.
Kinda like how WIC does it: You get ONLY what's on the check, and ONLY what's on an approved list.
BTW, cali, if you're too f'n stooopid to figure out a menu, maybe you're just too f'n stooopid to live. Please, eliminate yourself and your kindred spirits from the human gene pool, before another one of you "geniuses" piss in it again.