I'm going to join this. The only exception I'll allow is produce, I must have my produce, which is fairly cheap. I might also allow almond milk since it makes cream of wheat and oatmeal so tasty.
Everything else I seem to have in great quantity: pasta (tons of pasta), brown rice, white rice, black beans, chickpeas, diced tomatoes, tomato sauce, frozen veggies, oatmeal, shredded wheat cereal. I can safely stop buying these things and get through my stock.
So I think I'll hold off on spending money for food except for produce and almond milk. Mostly cauliflower for aloo gobi and bananas for my oatmeal every week. Maybe also I'll allow orange juice or grapefruit juice.
Should save me lots of $. :)