You can't say for sure! The cost is five yuan. I don't know if the five yuan you mentioned is the price of the finished product, that is, the food! It costs five yuan to sell a dish in 28 yuan, and it looks like a big profit! But I don't know if you have removed some additional expenses! For example: the tableware used by guests, industrial and commercial taxes, health expenses, chef's salary, waiter's salary, and of course the rent of the house. What I said here is to get even one steamed bread from every meal you sell! Excluding these is your surplus value, that is, profit! How much is it? Count it yourself!