Hongū has some restaurants, and even a small grocery store, though few options for dinner. In Yunomine, near Tsubo-yu, look for the yutzusu, a public cooking facility where you can cook eggs and more in onsen water (Yunomine's spring comes out naturally at 93°C); some local shops sell eggs. There's a simple shokudō (all-round, inexpensive restaurant) at Watarase.