Yes, in my argument I had meant continuos running. These are family run restaurants. Started by great (or great-great or great-...-great) grandfather of curren

Yes, in my argument I had meant continuos running. These are family run restaurants. Started by great (or great-great or great-...-great) grandfather of current owners, serving limited menu of family recipes. BTW: all that I said applies to large parts of Asia if the OP was not focused on just vegetarian restaurants, where India has an edge.