Pressing SHIFT+ALT+C will give you $100,000 each time you use the code.

or if you wanna do it the normal way, raise prices/lower quality it wil make the food cost
less to make, but only do that in low star restaurants cuz there they will expect lower
quality food. And make sure you try and spend almost no money on other things. And don't
throw away things, it wil make your profit go down