How long does Vegemite last when opened?

Vegemite is a popular Australian food spread made from leftover brewers’ yeast extract. It has a very distinctive salty and umami flavor that Australians love to spread thinly on toast, crackers, and sandwiches. But once you open a jar of Vegemite, how long will it last before it goes bad?

Quick Answer

An opened jar of Vegemite will generally last about 2 years past its printed expiration date if stored properly in a cool, dry place. The high salt content of Vegemite helps prevent spoilage and mold growth. However, over time it can start to lose flavor, become rancid, or dry out.

How to Tell if Opened Vegemite is Still Good

Here are some signs that your opened Vegemite may be expiring or spoiled:

  • Appearance changes: Vegemite should be very thick and smooth with an evenly dark brown color. If it becomes runny, separates, or lightens in color, it may be going bad.
  • Mold: Any fuzzy growth or change in color signals mold. Discard Vegemite immediately if you see this.
  • Smell: Vegemite should have a pleasant salty, malty aroma. A sour, rancid, or off smell means it’s no longer good.
  • Flavor: Taste your Vegemite. It should taste very savory and salty without any bitterness or off flavors. Vegemite also shouldn’t taste dry.

Maximizing Freshness of an Opened Jar

Here are some tips for keeping Vegemite fresh for as long as possible after opening:

  • Keep it cool: Store your Vegemite in the refrigerator after opening. The cold temperature will slow down separation and any chemical reactions that lead to spoilage.
  • Seal tightly: Always screw the lid back on tightly to prevent air from getting in and drying out the Vegemite.
  • Use clean utensils: Use a clean utensil each time you scoop out Vegemite to avoid introducing bacteria.
  • Watch expiration date: Check the “best by” date on the jar and be extra diligent about signs of spoilage around that time.

Does Refrigeration Extend the Shelf Life?

Yes, refrigerating Vegemite after opening will extend its shelf life significantly. The cooler temperature inside the refrigerator slows down chemical reactions and bacteria growth that can cause food spoilage.

An unopened jar of Vegemite has a shelf life of about 2-3 years stored in a pantry. Once opened, Vegemite will stay fresh in the fridge for around 2 additional years past the printed expiration date. Make sure to keep it in the main refrigerator compartment, not the door where temperature fluctuations happen.

Can You Freeze Vegemite?

Freezing isn’t recommended for preserving opened Vegemite. The high salt content may cause separation or texture changes when frozen and thawed. The yeast extract also has potential to pick up off-flavors from the freezer.

If you do freeze Vegemite, store it in an airtight container and use within 2-3 months for best quality.

Does Refrigeration or Freezing Affect Quality?

Refrigerating Vegemite can slightly mute its flavor over time but is worthwhile for extending freshness. The salty umami taste may become less pronounced after months in the fridge.

Freezing has a higher chance of quality loss. Thawing and freezing makes the Vegemite runnier in texture. It can also pick up odors from the freezer that create off-flavors. Only freeze as a last resort for preserving excess Vegemite.

What Happens If It’s Left at Room Temperature?

Leaving Vegemite or any opened condiment at room temperature significantly decreases its shelf life. The fluctuations in temperature and exposure to air accelerate the chemical reactions and microbial growth that lead to spoilage.

At room temperature, opened Vegemite may only last about 6-8 months past its printed expiration date before the quality declines. It’s best to refrigerate it immediately after opening.

Can It Be Stored in the Pantry Once Opened?

It’s not recommended to store opened Vegemite in the pantry. The room temperature environment allows microbial growth and staling to happen much faster compared to refrigeration. Within several months, pantry-stored open Vegemite can take on off-flavors or textures.

For maximum shelf life after opening, be sure to keep Vegemite in the fridge. Discard if you see any mold, smell rancidity, or notice a change in appearance, texture, or taste.

How to Store an Opened Jar

Follow these tips for properly storing Vegemite after opening:

  • Refrigerate immediately: Place the Vegemite jar in the main compartment of the refrigerator right after first use.
  • Seal tightly: Always screw the lid on tightly to prevent air exchange that can dry it out.
  • Use clean utensils: Scoop with a clean utensil each time to avoid bacteria transfer.
  • Watch for signs: Check regularly for changes in appearance, aroma, and flavor that signal spoilage.
  • Check “best by” date: Be extra vigilant approaching the printed expiration date for any sign the Vegemite is past its prime.

What Are the Main Causes of Spoilage?

There are a few main factors that can lead to Vegemite spoilage after opening:

  • Microbial growth: Bacteria and mold can grow if introduced from utensils or hands. This is why using clean utensils each time is essential.
  • Oxidation: Chemical reactions with oxygen can occur, causing rancidity and off-flavors.
  • Moisture loss: When exposed to air, Vegemite can dry out and become overly thick.
  • Temperature abuse: Heat and cold accelerates chemical reactions. Room temperature storage leads to faster spoilage.

Proper refrigerated storage and handling helps slow down all of these potential causes of Vegemite spoilage after opening.

How to Store for Long Term

For long term storage of opened Vegemite, follow these guidelines:

  • Refrigerate immediately in an airtight container. Glass jars or plastic containers with tight lids work best.
  • Use a clean dry utensil each time you scoop out Vegemite.
  • Write the opening date on a sticky note on the jar.
  • Check regularly for any signs of spoilage as described earlier.
  • Consume within 2 years past printed expiration and watch closely nearing that date.
  • Discard immediately at any sign of mold or off-aromas, tastes, appearance, or texture.

Shelf Life After Opening Summary

Here is a summary of Vegemite’s shelf life after opening when properly stored:

  • Refrigerator: 2 years past printed expiration date
  • Pantry/Room temperature: 6-8 months past printed expiration date
  • Frozen: Not recommended. If freezing, use within 2-3 months.

Be vigilant with food safety practices like refrigeration after opening and using clean utensils. Discard your Vegemite immediately at any signs of spoilage.

How to Tell When It’s Expired

Here are the top signs that opened Vegemite has expired and should be discarded:

  • Appearance: Separated, bubbly, lighter/darker in color, or has a milky haze
  • Texture: Runny, overly thick, or has lumps
  • Aroma: Sour, rancid, musty, or otherwise off-smelling
  • Flavor: Salty taste is diminished, tastes rancid or bitter
  • Mold: Any fuzzy growth on the surface means it’s bad

Trust your senses – if your Vegemite displays any visual, aroma, texture, or taste red flags, play it safe and throw it out.

Does Vegemite Need to Be Refrigerated Before Opening?

An unopened jar of Vegemite does not need to be refrigerated – proper pantry storage is fine. The airtight seal of an unopened Vegemite jar prevents contamination or spoilage.

Check the “best by” date and store in a cool, dry place away from direct sunlight. Refrigeration becomes important immediately after first opening the Vegemite.

Signs of Spoilage in Unopened Vegemite

Sealed Vegemite can last 2-3 years stored properly. However, here are some signs of spoilage before opening:

  • Jar lid is loose, bulging, or leaking
  • Liquid seeping around cap or jar cracks
  • Darkened or faded label colors
  • Expired “best by” date
  • Noticeable sloshing when shaking jar

If you notice any of these visual or auditory red flags, it’s best to discard the Vegemite instead of opening to avoid possible illness from consumption.

Does an Open Jar Need to Be Used Quickly?

An opened Vegemite jar doesn’t necessarily need to be used up quickly. Thanks to preservatives and refrigeration, it will keep well for up to 2 years past the printed expiration date.

However, it’s ideal to use opened Vegemite within about 6-8 months for best flavor. The salty umami taste can start diminishing over time. Portion out excess into a smaller airtight container if you won’t finish it quickly.

Monitor closely for any signs of spoilage as the Vegemite ages past its “best by” date. Discard immediately if any mold, smell, texture, or appearance changes arise.

Can It Be Transferred to Another Container?

Yes, opened Vegemite can safely be transferred to another airtight container for storage. This can be helpful for portioning out excess so you don’t have to open the original jar as often.

Glass and rigid plastic containers with tight sealing lids work best. Make sure the container is completely dry before transferring the Vegemite. Use a clean utensil and don’t double dip to avoid contamination. As always, refrigerate after opening or transferring.

Does Exposure to Air Decrease Shelf Life?

Yes, exposure to air can decrease the shelf life of opened Vegemite. Air allows oxidation reactions to occur, which can cause off-flavors or rancidity over time. Air exposure also causes drying out.

Trying to store open Vegemite in the pantry exposes it to more fluctuations in temperature and humidity levels. Always replace the lid tightly after use and refrigerate to minimize air exposure and extend shelf life.


To maximize the shelf life of your Vegemite once opened, be sure to refrigerate it immediately in an airtight container. Properly stored, it will remain fresh for about 2 years past the printed expiration date. Check regularly for any changes in appearance, aroma, texture, and flavor that signal it’s expired. Discard promptly at the first sign of mold or spoilage. Following proper storage methods and food safety practices will help preserve your Vegemite for lasting enjoyment.

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