How Long Does Seaweed Salad Last? Vegetable Of The Sea

Seaweed salad is also referred to as Hiyashi wakame or wakame. This food is simply seaweed mixed with other ingredients to form a salad. This food is usually found in sushi bars and higher-end restaurants, but in recent years, you can find them at your local grocery stores. It usually comes in a package or container that’s frozen. Most people will not be able to consume the entire package in one sitting and will end up with leftovers. Therefore, most people will wonder how long does seaweed salad last.

So how long does seaweed salad last? At room temperature, seaweed salad should not be kept longer than 4 hours. In the fridge, seaweed salad will last up to 4 days. If it’s stored in the freezer, it can last up to a year.

Seaweed Salad Shelf Life

Room TemperatureRefrigeratorFreezer
Seaweed Salad last3 to 4 Hours4 Days1 Year

How Long Does Seaweed Salad Last?

Seaweed itself will last for a very long time. When it’s combined with other ingredients to make a salad is when their shelf life decreases dramatically.

Seaweed salad that is kept at room temperature will last about 4 hours. Therefore, you should always try to consume it within that time period. If not, it’s best to store them in the fridge.

In the fridge, seaweed salad will last up to 4 days before they start going bad. It could be bad much sooner depending on how often it’s exposed to air. If you store them in a container and open it frequently to eat a small serving, the seaweed salad will probably last a few days at the most.

Storing them in the freezer will the longest shelf life. By freezing them, seaweed salad can retain its freshness for up to a year. However, it will last much longer if it’s kept frozen. Once the salad thaw, the quality will start decreasing. Therefore, you should never freeze seaweed salad that has thawed.

seaweed salad with avocado

Storing Seaweed Salad

Due to the ingredients used, seaweed salad should always be stored in a fridge where it’s cool. Wakame shouldn’t be stored at room temperature unless you’re planning to eat within an hour.

If you’re planning to eat wakame within the hour, store it at room temperature is fine. However, you’ll want to keep it as cool as possible. This means keeping them from direct sunlight and away from other heat sources.

Another way to keep them cool is to put the seaweed salad on ice. Simply put the salad on a plate and place it on top of a bath of ice either in a container or a bowl. This is great for keeping wakame cold and crunchy while it’s at room temperature.

If you’re storing them in the fridge, always store them in an airtight container or in a resealable plastic bag. Both work great at keeping wakame fresh for a couple of days. If you have limited space, you can put the seaweed salad in a bowl and cover it tightly with a wrapper.

When storing them in a plastic bag, put just enough sesame salad in the bag where you’ll have room to zip it up.

Can You Freeze Seaweed Salad?

Seaweed salad freezes really well due to its high content of water.  So yes, you can freeze seaweed salad.

Freezing seaweed salad is recommended if you’re planning to keep it for a long time, or you consume it regularly. Additionally, freezing the salad will help retain their freshness longer too.

When it comes to freezing wakame, you should try to limit the amount of time they need to be frozen. Repeated thawing and freezing will decrease the quality of the seaweed salad. Therefore, it’s best you only thaw and refreeze it once to retain its freshness.

Another option would be to simply divide the salad into small servings and store them in separate freezer bags. That way, you’ll only need to thaw the amount of seaweed salad you need without sacrificing freshness.

How To Freeze Seaweed Salad

When it comes to freezing seaweed salad, there’s not much work to involve, and don’t require a lot of time.

Depending on how often you will consume the salad, you can either freeze an entire package or split them into portions and freeze them separately.

More than likely, you’ve bought them from the store. They will come in a package that’s frozen. All you need to do is put them into the freezer right away once you get home.

If you want to freeze a small portion of it, follow the simple steps below:

  1. Leave the frozen package of seaweed salad in the fridge to thaw. It should be left overnight to thaw for at least 8 hours.
  2. Once it thaws, open the package and transfer portions of seaweed salad to a small resealable freezer bag. It’s best to put enough where you can consume all of it without having to store it again.
  3. Squeeze the bag to remove any excess air before sealing the bag.
  4. Label the bag with a date and put them in the freezer.
  5. If you’re planning on stacking them on top of each other, let the seaweed salad freeze completely.


To defrost seaweed salad, it is recommended to defrost it in the fridge overnight to retain the best quality.

seaweed salad in a bowl

How Can You Tell If Seaweed Salad Is Bad?

When seaweed salad goes bad, there are signs to look out for.  Below are what you should look for:

  • Texture – When seaweed salad goes bad, it will become slimy and have a gooey texture. This is usually when it’s exposed to prolonged warm temperatures.
  • Smell – Seaweed salad that’s of good quality will smell
  • Taste – Good quality wakame will have a refreshing light taste that will be crunchy. When it goes bad, the salad will be soft and have a vinegar taste. When it has this taste, you should discard the entire

How To Keep Seaweed Salad Fresh Longer

To keep seaweed salad fresh for as long as possible, they need to remain in a cool place. The best place to store them in either the fridge or the freezer. This is very important if you want to retain their freshness for as long as possible.

If you’ve bought them from the grocery stores, they will come in a frozen package. As soon as you get home, transfer the entire package of wakame to the freezer immediately.

If you’re eating out at a sushi bar or other establishment that serves seaweed salad, you may end up with leftovers. Most restaurants will make fresh seaweed salad. Therefore, if you end up with a lot of leftovers, you should freeze them once you get home. If there is just a small portion of leftovers, storing them in the fridge will be fine.

As you can see from above, it’s very important to keep seaweed salad cool at all times if you want to retain its freshness for a longer time.

Related Questions

Is seaweed a vegetable?

Seaweed salad is plant-based seafood, so yes, it can be called a vegetable.

Is seaweed salad healthy?

Yes, seaweed salad is healthy due to the many vitamins and minerals it has. Seaweed is a great source of vitamin A, C, E, K, and B-vitamins. As for minerals, it’s rich in calcium, iodine, selenium, and iron.

Besides nutrition from seaweed, you’ll also benefit nutrition from other ingredients used to make the seaweed salad. This includes red pepper flakes, vinegar, salt, and cloud ear mushrooms.

Is there food coloring in seaweed salad?

You may notice that your seaweed salads are neon green. This is not the natural color of seaweed. The natural color of seaweed is dark green. The neon color you see is food coloring, which is made up of syrup and MSG.

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