Even including the provinces, there are only a few to about some tens in each prefecture, so totally it is just about a few hundred in the whole nation (data from Traditional Japanese Cuisine Restaurant Association and Junior Traditional Japanese Cuisine Restaurant Association).
地方ともなれば、各県内中にわずか数軒から数十軒ほどであり、全国合わせても数百軒ほどである（料理業組合、芽生会加盟店数）。