We need to get rid of taxes being separately listed as well. Taxes should be treated as a business expense. I pay you for food, then you pay for electricity, water, heat, supplies, taxes, insurance, etc. and keep the profits. That's how it works.

Just state one number on the menu for each item and charge exactly that number. I'm more likely to buy something that says "$12" than "$10+taxes" because it's deterministic and not some vague probability distribution in my head of how much "taxes" is.