わんこそば is a traditional Japanese dish originating from Iwate Prefecture. It consists of small servings of soba noodles served in a bowl, where diners eat as many bowls as they can. The noodles are typically accompanied by various toppings and sauces, enhancing their flavor. The unique aspect of わんこそば is the way it is served. A server continuously refills the bowl with noodles until the diner signals they are finished, often by placing a lid on the bowl. This dining experience is both fun and competitive, making it popular among locals and tourists alike.