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Does Sake Go Bad? How to Tell and Properly Store Sake

Traditional Japanese rice wine Sake doesn't have an expiration date when it goes bad, but it can lose some of its best flavors over time. Without being opened, sake can last for years if it is stored properly. 

Once opened, it's best to drink it within one to two weeks. When you know how to spot signs of spoilage, like changes in color, smell, and taste, you can enjoy sake at its best and not drink it before it's time.

Does Sake Go Bad?

Sake doesn't have an expiration date when it goes bad like other alcoholic beverages do, but its taste can change over time. Sake’s shelf life largely depends on storage conditions, whether it’s pasteurized, and if the bottle is opened. 

Although sake that has been opened will last longer, it is best to drink it within a few weeks. Light, heat, and the oxidation process all have an impact on sake's flavor and quality.

Unopened vs. Opened Sake

  • Unopened sake, when stored properly in a cool, dark place, can retain its best quality for years. Pasteurized (heat-treated) sake, like most regular sake, is more stable than unpasteurized sake (nama sake), which must be refrigerated and consumed sooner.

  • When sake is opened and exposed to air, it oxidizes quickly, so it should be drunk within one to two weeks. Putting sake in the fridge slows down this process, which helps the flavors last longer.

How Sake Differs from Other Alcoholic Beverages

  • Sake isn't usually meant to be aged for a long time like wine is, but some types of aged sake are made to be aged.

  • The brewing process for sake focuses on freshness, meaning most sake types are best enjoyed young rather than aged over years.

How Do You Know If Your Sake Is Bad?

It's pretty easy to spot bad sake because it has clear signs. As sake ages, it may take on tastes, colors, and smells that you don't like. While sake doesn't go bad in a bad way, it won't be fun to drink after its best time. If you know these signs, you can avoid the bad taste of oxidized or old sake.

Visible Changes in Sake Bottles

  • Old sake can get darker over time. New sake is usually clear or light in color. If the color has changed to yellow or amber, it could mean that the metal is oxidizing.

  • If you find sediment in clear sake instead of nigori sake, which usually has a cloudy appearance, it may also mean the sake is past its best.

Taste and Smell of Bad Sake

  • Bad sake might smell like sour or vinegary things, which means it's not fresh anymore. Most of the time, strong, unpleasant smells mean that food is going bad.

  • Sake may lose its delicate flavors over time and start to taste sharp, bitter, or old. If you're not sure, take a small taste to see how good it is.

Can You Drink 20-Year-Old Sake?

It is possible to drink very old sake, but it won't always taste right. Aged sake, also known as koshu, is made to age for years, giving it new flavors as it does so. 

But some types might not age well, especially if they are not stored properly. If you store a 20-year-old bottle of sake the right way, it should be safe, but the taste might be very different from new sake.

Aged Sake vs. Regular Sake

  • Aged sake, which undergoes a special brewing process for long-term storage, develops complex flavors over time. This isn't the same as regular sake, which gets old and less tasty over time.

  • Regular sake is best consumed within a year of the bottling date for peak flavor, as it’s crafted to be enjoyed young.

Potential Risks of Drinking Old Sake

  • If you store sake in a warm or direct sunlight area, for example, it can develop bad tastes and smells.

  • It might not be harmful, but if the old sake no longer tastes good, it's better to use it for cooking instead of drinking.

How Long Can Sake Be Kept After Opening?

Once you open a sake bottle, it doesn't last as long, and the flavor starts to get worse. Once opened, most sake types are best enjoyed within a certain amount of time. However, the length of time that sake lasts will vary depending on the type of sake and how it is stored. If you want to keep the flavor of opened sake, put it somewhere cool and dark, like the fridge.

Optimal Shelf Life for Opened Sake

  • If you open a bottle of sake, you should drink it within a week. But some types of sake, like ones with more alcohol, might last a bit longer if they are stored right.

  • Nama sake, which has not been pasteurized, tends to go bad faster than pasteurized sake because it is more sensitive to changes in temperature.

Storage Tips to Preserve Quality

  • Once you open sake, put it in the fridge to slow down the oxidation process. To keep the flavor fresh, make sure the cap is on tight.

  • Putting the sake somewhere cool, dark, and away from changes in temperature will help it stay drinkable. You can also store sake in small bottles for a long time to keep it from getting too much air.

What Does Bad Sake Smell Like?

Sometimes, sake gives off strong smells that let you know it's past its best by date. Bad sake may smell unpleasant or sour, which means it has been exposed to too much air or hasn't been stored properly. You can tell if it's still safe to drink by smelling these things.

Recognizable Spoilage Odors

  • If sake smells like vinegar or other strong, acidic smells, it means that its quality has dropped.

  • If the smell of the sake is strong and unpleasant, it's likely that the flavor has been changed, and it might not be fun to drink.

Knowing the Difference Between Aged and Spoiled Sake

  • Koshu, which is aged sake, may smell different, like nuts or soy sauce. This is normal because of the brewing process.

  • If the sake smells sour or "off," it probably isn't good to drink. Instead, it might be better to use cooking sake instead.

If you follow these tips, you can get the most out of your sake, whether you plan to drink it or store it. Knowing how to store sake bottles and spot bad sake will make sure that every bottle you open is fresh and enjoyable.

Final Thoughts

Most sake, if stored properly, can be enjoyed for a longer period than other alcoholic beverages.While sake doesn’t have a strict expiration date, but its shelf life depends on the type of sake, brewing process, and storage conditions. 

For the best quality, keep sake in the fridge and out of direct light. If it turns into bad sake due to improper storage or long oxidation process, you can still use it as cooking sake. A sake bottle can last for a while, but once it's been opened, it should be drunk within a week. You can get the most out of your drink sake by keeping track of the best-by date and other clues.

Frequently asked Sake questions