Fwiw, some of the best food that I ever ate in South America was bought by the side of the road & with VERY basic food preparation "equipment".
IF you want to own a food place & have no money, you acquire a car hood, burn the paint off of it & scour it till it shines with water & sand, find several good-size stones, gather some meats (of various sorts = We called it "mystery meat".), set up your car hood, as a large griddle, over a fire & start cooking.
People will pull off the road & buy your food.
Later, as you make some money, you acquire a tub, ice & soft drinks to sell & later get a picnic table or two.
IF you are a good cook & thrifty, eventually you can gather enough money to build a lunch stand & finally perhaps a real restaurant.
yours, satx