Food options are limited on the mountain. There are expensive restaurants in all the hotels but it is hard for a solo traveller to find cheap food. There are several small grocery stores selling snacks & drinks. Stinky tofu of a particularly stinky variety seems to be popular as well. On top of the mountain in peak season, water was ¥6-10, beer ¥10, meat sticks 3 for ¥10, instant noodles ¥10, cucumbers 2 for ¥6.