A person set up a stall to do snacks, what is better to do?

Setting up a stall to sell snacks, to find a demand for snacks to sell, that is, the local people like to eat, it is easy to sell. For example: fried skewers, boneless chicken tenders, Orleans chicken necks, stinky tofu, grilled cold noodles, lamb kebabs, fried fresh milk, octopus dumplings, egg pancakes fried cold skin can be added to the meat, deep-fried ice cream, fried potato chips, barbecue and so on, all of these can be sold in a stall.