Ozawa Brewing Company was Founded in 1702 in the far west of Tokyo in an area called Okutama. The brewery sits in a valley which has two water sources running through it: one hard and one soft. This access to both hard and soft water is a rare occurrence. The brewers use the hard and soft water in different amounts depending on what they want from the resulting sake. If you get the chance to visit, you will find the brewery’s serene garden by the Tama River, where you can enjoy sake accompanied by a variety of foods and local fauna.