it depends on what kind of meal you sell. if it's a hot pot, you can use electricity. It is cheaper.

among the things you mentioned, gas is the cheapest, followed by natural gas and electricity (because electricity is used for business, and it is almost the same as gas for civil use), and liquefied gas is the most expensive.

however, it should be noted that if gas and natural gas are used, there must be a special pipeline leading to the hotel. The one at home is too small to supply gas for cooking, and it needs a thick pipe to send gas.

liquefied gas is not restricted, which is why many hotels use liquefied gas.