Ponshukan Marketplace in Niigata is a sake vending machine tasting bar. They also sell a bunch of other local products from snacks and sweets to traditional seasonings and regional ingredients, they've got it all straight from local producers. The Sake Tasting Room has nearly 100 types of sake from Niigata's 90 breweries – a must-visit for any sake enthusiast! Just 500 yen for 5 tokens and one shot can be as cheap as 1 token.
Look for the sake heating area where you can warm your own sake.