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Shelf Life Guide: How Long Does Mochi Last?

If you haven’t heard of mochi before, it’s a type of sweet rice cake that is both chewy and sticky.

It originates from Japan but is now famous all over the world.

Mochi has been around for centuries, and while it’s not always easy to find in American grocery stores, you can make your own at home.

Here are some tips on how to store and how long mochi lasts so you can enjoy this delicious treat all year round.

How to Store Mochi?

how to store mochi

Mochi is traditionally a rice cake made with glutinous rice.

It has become common in many Japanese celebrations, weddings, and holidays because it comes out beautifully when steamed or grilled.

You might have wondered what to do with your leftover mochi at the end of a party.

Keep any mochi you are not going to eat soon refrigerated darkly covered; this will extend the life of your treats by up to 3 days per layer of wrap used.

You can also freeze mochi for future use.

Make sure to wrap it tightly in layers of aluminum foil, then a plastic bag or container that is airtight and ideally frozen flat.

The freezing process will not affect the flavor as long as you store the product correctly.

If you want to heat your leftover mochi, make sure they are fully defrosted before heating them with water or simply eating them cold–either way has its benefits.

How Long Does Mochi Last?

how long does mochi last

The shelf life for homemade mochi is about 24 hours.

After that time, it can start to mold and harden so much that it will no longer be edible.

Fresh homemade mochi can last for up to one week if refrigerated, but you should keep in mind it will dry out.

Mochi frozen can retain its texture and flavor as long as the more is within two weeks of your freezer’s expiration date.

Freezing mochi is a great way to preserve it while still giving everyone their chance at first dibs.

Your best bet may be buying pre-made mochi from a store.

This typically lasts longer than homemade varieties because they’re packaged individually with foil or plastic wrap.

You’ll also find that most grocery stores carry several brands of ready-to-eat rice cakes designed explicitly for keeping fresh for much longer.

These are usually wrapped airtight with moisture-roof material like paperboard or plastic.

In addition, many stores also sell brands of mochi that are shelf-stable or long-lasting for up to a year in the refrigerator if unopened—so you can keep these on hand for when your family and friends want some.

How to Tell if Mochi is Bad?

how to tell if mochi is bad

What is the best way to know if your mochi has expired? What are some telltale signs that it may have gone bad?

Well, one of the easiest ways you can spot spoilage on a packet or box of Japanese rice cakes (mochi) is by looking for an expiration date.

If there isn’t any written directly on the product label, then try checking its original packaging.

Otherwise, find out what day and year each cake was packaged – sometimes this will be indicated with “Best before” dates stamped onto their surface, which tells you how long they’ll last in storage without spoiling.

Another way to tell is by looking at the mochi’s texture.

Slightly dried and hardened pieces will crack if you try to bite into them, which means they are most likely past their prime.

Mochi should be soft when biting into it, or else it has been sitting around for too long.

If the mochi has been sitting for a long time, it will start to turn dark and sour in flavor.

If this is the case, then you should probably throw them away since they are no longer edible or safe to eat.

Is your mochi turning into a slimy and gooey mess? If so, then it’s time to throw the batch away.

The best way to keep your mochi fresh? Try keeping it refrigerated before using so that bacteria don’t have enough time to grow on top of the sweet dessert.

how long does mochi last

How Long Does Mochi Last? Does Mochi Go Bad?

5 from 1 vote
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Shelf Life
Servings 1 Serving


  • Mochi
  • Air-tight containers or Ziplock bags
  • Labels and markers


  • Read the guide thoroughly to learn how long it lasts.
  • Label your container with the content and date and keep track of how much you’re using!
  • Make sure to store in an airtight container in a cool, dark place (pantry or fridge).
Did you make this recipe?Mention @EatDelights or tag #eatdelights!

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