Food Preservation

Does Mustard Go Bad? How Long Does Mustard Last?

In this article, you will know the answer to the query “Does Mustard Go Bad? How Long Does Mustard Last?“.

The seeds of mustard plants are used to prepare mustard as a condiment.

In addition to spicy and sweet mustards, there are many other types of mustard.

Besides ketchup, mayo, and hot sauce, mustard is a popular topping for hot dogs and hamburgers.

There is nothing unusual about finding a half-opened bottle of mustard in your kitchen. When the use-by date has passed, the main concern arises. Are mustards prone to spoilage?

How can you tell if mustard has gone bad if it does? If you are wondering about the shelf life of mustard, both opened and unopened, you might be wondering the same thing.

You have come to the right place if these questions have bothered you.

In this article, we will discuss the shelf life of mustard, how to identify bad mustard, and what to look out for in mustard.

Does Mustard Go Bad? How Long Does Mustard Last?

Mustard comes in several varieties, as previously mentioned. There are mustards with high acid levels, such as Dijon mustard, and those with low acid levels, such as honey mustard.

This means that shelf life can vary from one type to another. Furthermore, mustard’s shelf life is also significantly affected by the storage conditions.

Mustard, like other condiments such as ketchup and mayonnaise, will eventually degrade in quality. The best-by date is printed on mustard labels, indicating how long it will stay fresh.

It is important to keep in mind that mustard can easily last for some months after its use-by date since it contains acidic ingredients.

For opened mustard, the condiment can last up to one to two months when stored at room temperature.

In order to extend the shelf life of your product, you should consider storing it in the refrigerator. It can last between six and twelve months.

Mustard that has passed its use-by date can last up to a year if it has not been opened. As shown in the following table, mustard has a shelf life of:

Type Pantry Fridge
Opened mustard 1-2 months 6-12 months
Unopened mustard 12 months 2-3 years

If you want to extend the shelf life of mustard, follow the storage guidelines.

Furthermore, the above-listed periods are estimates. Because of this, some mustards can retain their quality much longer or much shorter depending on the ingredients used.

How to Tell If Mustard Is Bad? Mustard Shelf Life!

Due to mustard’s acidic nature, it is quite rare for the condiment to go bad. It does not mean, however, that your mustard will never spoil.

Mustard will lose its acidic nature with time, making it less effective in fighting microbes or other contaminants.

If your mustard displays any signs of organic growth or a bad smell, then you should avoid it. You should not consume your mustard if this happens.

In addition, mustard that is more than one to two years old should be thrown away.

The flavor of mustard can also be used to determine whether it has gone bad. When mustard comes into contact with any harmful contaminants, it loses its natural flavor.

If it needs to be replaced, it should be done as soon as possible. Here are some signs that mustard is unusable:

Texture: One of the signs that mustard cannot be used is texture. It is possible for mustard to lose its texture over time. It is a sign that your mustard has gone bad if you notice any lumps below the container.

Mold: The growing of mold inside the container is another sign that indicates unusable mustard.

Taste: Taste is another sign that the mustard is unusable. Long-term storage of mustard usually results in the loss of its original flavors. Whenever you should discard it whenever its taste changes.

Smell: It is the most common way to tell if mustard has gone bad. You can tell if your mustard has gone bad by its unpleasant or sour smell.


It is generally true that mustard stays fresh for longer periods of time. The quality of your mustard, however, cannot last forever.

It is possible for mustard to remain in good condition for years after it has been opened. Once you open the container, it will last between six months and a year.

Look for signs such as an unusual texture, a bad smell, or reduced flavor to determine if your mustard has gone bad.

Those signs indicate that the mustard is unusable.

Does Mustard Go Bad? How Long Does Mustard Last?


15 minutes


15 minutes


30 minutes


  • Mustard
  • 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).
  • If frozen, thaw in the fridge before use. Always check for signs of spoilage before use.

If you want to read more about food preservation, read here: FOOD PRESERVATION.

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