Sake brewing in Tokyo, contrary to its urban image, thrives in the Tama region, blessed with abundant nature and pristine water sources. With a history dating back to the Edo period, over a dozen breweries continue to craft unique sake while preserving tradition. A distinctive feature is the use of groundwater from the Tama River system for brewing, resulting in sake with a fine texture and soft mouthfeel. Representative brands include "Sawanoi" from Ozawa Shuzo and "Tamajiman" from Ishikawa Brewery, both pursuing a clean yet profound taste that reflects the local terroir. Tokyo's sake scene also stands out for its innovative approach, offering diverse ways to enjoy sake that cater to modern urban lifestyles. Despite being a major metropolis, Tokyo's brewers maintain a strong commitment to quality and local identity, making their sake a unique expression of the capital's hidden natural bounty.