Storage & Aging

Sake Is Alive

Sake continues to change after bottling. Three enemies accelerate deterioration: light, heat, and oxygen. Protecting sake from these extends its quality and, in some cases, intentionally managing these factors creates something entirely new: aged sake.

Keep It Dark

UV light triggers a reaction in sake that produces an unpleasant "hinata-kusai" (sun-baked) odor. The brown and green glass used for sake bottles offers partial protection; clear glass bottles should be wrapped or stored away from light entirely.

Keep It Cool

Heat rapidly accelerates deterioration. Pasteurized sake (most commercially sold sake) can be kept in a cool, dark place, but a refrigerator is ideal. Namazake (unpasteurized) must be refrigerated at all times and consumed relatively quickly. Below 10°C is the target.

Stand It Upright

Unlike wine, sake should always be stored upright. Horizontal storage increases the surface area in contact with air, accelerating oxidation. It also risks the cap or stopper transferring off-flavors to the sake.

Once Opened

Pasteurized sake is best consumed within one to two weeks of opening if refrigerated. Namazake within a week. Oxidation is not always negative — some drinkers prefer the "aged" quality of a partially oxidized sake. Know what you are looking for.

Koshu — The Art of Aging

Deliberately aged sake — koshu — develops amber color and complex aromas of nuts, dried fruit, caramel, and forest floor. Five-year, ten-year, and longer examples exist. Not all sakes age well; kimoto and yamahai junmai styles have the highest aging potential. For the curious drinker, a well-aged koshu paired with aged cheese is one of the most rewarding experiences Japanese sake offers.