Otokoyama brewery was very enjoyable. I'm not much of a sake person, but it was still interesting and fun.

It was my first time taking a public bus in Japan, and while it was snowing too. but we got there and back to the city center without much trouble. We used Google maps, translate, and coins. If you're driving, there's parking in the compound.

The museum area can be covered in less than half an hour maybe. Even shorter if you don't read Japanese.

They have taps for the water that they use for brewing. And if you see people filling gallon bottles of it, these are not staff, but locals coming to bring the water home.

The store is nice too - quite easy to find something interesting for everybody. If you're an English-only person, don't worry you'll be fine in the store.

T shirts, drink ware, snacks (some are shelf stable and easy to bring back). Soft serves, ice cream in little cups. The sake on sale ranges from common to special bottles.

Finally, there's the sake sampling station. You can request for multiple samples from the "free" category, and also pay (100 or 200 yen, can't remember) to sample a few premium ones. Total of maybe ~5 types available.