Quick Overview
Once opened, canned tomato paste should be transferred to an airtight container and stored in the refrigerator. An opened can of tomato paste will last 3-4 days when properly stored. Storing tomato paste in the fridge prevents mold growth and preserves the flavor. Transferring to an airtight container prevents air exposure which can degrade the quality over time. Some suitable airtight containers for storing tomato paste include mason jars, plastic containers with lids, or resealable plastic bags. Be sure to label the container with the date opened.
Should You Refrigerate an Opened Can of Tomato Paste?
Yes, an opened can of tomato paste should always be refrigerated. Leaving tomato paste out at room temperature after opening allows microbial growth like mold and bacteria. The fridge slows this growth way down. Refrigeration is necessary for both food safety and preserving texture/flavor.
Why Refrigerate Tomato Paste?
There are two main reasons to refrigerate opened tomato paste:
1. Prevent foodborne illness: Tomato paste is perishable once opened. It can grow mold, bacteria, and other pathogens if left unrefrigerated. Storing opened tomato paste in the fridge prevents harmful microbes from multiplying to dangerous levels.
2. Maintain quality: Refrigeration slows the chemical reactions that cause tomato paste to degrade in texture, color, and flavor. An opened can left in the pantry will quickly lose its fresh taste.
So for both food safety and quality purposes, be sure to promptly refrigerate tomato paste after opening.
How Long Does Opened Tomato Paste Last in the Fridge?
Properly stored in the refrigerator, an opened can of tomato paste will last 3-4 days. To maximize freshness and shelf life, transfer the paste to an airtight container before refrigerating. Make sure to label the container with the date opened.
Pay attention for any signs of spoilage like mold, off-smells, or a change in appearance. If you see any fuzz or sliminess, it’s best to toss the tomato paste even if it hasn’t reached the 3-4 day mark yet.
Should You Transfer Tomato Paste to Another Container?
Yes, you should transfer any remaining tomato paste to an airtight container after opening the can. Storing tomato paste in its original can in the fridge has some disadvantages:
- Metal can corrode over time, affecting taste
- More exposed surface area for oxygen to degrade quality
- Can take up more space compared to a smaller container
- Harder to stack cans in fridge
A dedicated storage container is the best option for preserving tomato paste after opening.
Benefits of Transferring Tomato Paste to a Container
Here are some benefits of transferring leftover tomato paste to an airtight container for the fridge:
- Takes up less space in the refrigerator
- Better protection from air exposure
- Easier to stack and organize
- Can freeze any extra amounts
- Helps track shelf life/date opened
- Limits metal contact and can corrosion
Overall, transferring to a sealed container is ideal for maximizing shelf life and preventing waste.
What Type of Container Should You Use?
Look for containers that are:
- Airtight – Tight lids prevent oxygen from degrading paste
- Non-reactive – Glass, plastic, ceramic work best. Avoid metal.
- Stackable – Choose compact shapes that conserve fridge space.
- Label-friendly – Write date opened and type of paste for easy ID.
Some good options include:
- Mason jars
- Plastic containers with snap-on lids
- Glass food storage containers
- Resealable plastic bags
Make sure all containers are clean before transferring tomato paste into them.
How to Store an Opened Can of Tomato Paste
Follow these simple steps for properly storing and preserving opened tomato paste:
- Refrigerate the can of tomato paste immediately after opening.
- Scoop out desired amount of tomato paste from the can.
- Transfer any remaining paste to an airtight storage container.
- Push excess air out of container before sealing to minimize air exposure.
- Make sure the lid or seal is tightly closed.
- Label container with type of paste and date opened.
- Place container in the refrigerator.
- Use within 3-4 days for best quality and food safety.
- Discard if any mold appears or if smell is off.
Storing an opened can of tomato paste does require some effort. But proper storage techniques will keep tomato paste fresh so none goes to waste. Taking the time to transfer it to a well-sealed container makes a big difference.
Tips for Storing Tomato Paste
Here are some additional tips for getting the longest shelf life out of opened tomato paste:
– Place container towards the back of the fridge where temperature is coldest.
– Frozen tomato paste will last for 2-3 months in an airtight container. Let thaw overnight before using.
– If paste develops a funky metallic taste, it may be reacting with the can. Transfer to a different container.
– If using just a small amount, spread paste in a thin layer rather than deep blob to minimize air pockets.
– Add a layer of oil or plastic wrap directly on the paste surface if storing for more than 2 days.
How Long Does Unopened Tomato Paste Last?
An unopened can of tomato paste has a very long shelf life compared to opened. Here’s how long commercially canned tomato paste lasts:
Pantry:
– Unopened: 2 to 3 years
Fridge:
– Unopened: 3 to 4 years
The expiration date on the can should be your guide for pantry storage. For the longest shelf life, store unopened cans in a cool, dry place. Refrigerating unopened cans will extend the shelf life even longer.
Once opened, the clock starts ticking and tomato paste must be used within 3-4 days. Make sure to promptly refrigerate and transfer to an airtight container after opening.
How to Tell if Tomato Paste Has Gone Bad
Here are signs that tomato paste has spoiled and should be discarded:
– Mold growth
– Changes in color or consistency
– Unpleasant sour smell
– Fizzy bubbles or fermented smell
– Metallic taste when sampling
– Significant separation of liquid in jar
Trust your senses – if the tomato paste seems off in any way or shows signs of spoilage, play it safe and throw it out. Don’t taste tomato paste that you suspect may be spoiled.
Frequently Asked Questions
Can you freeze leftover tomato paste?
Yes, tomato paste freezes well for long-term storage. Transfer any unused tomato paste from the can into an airtight freezer container, allowing some headspace for expansion. Properly frozen, tomato paste will keep for 2-3 months in the freezer. Thaw overnight in the fridge before using.
What are some uses for tomato paste?
Tomato paste adds rich umami flavor and texture to many dishes like pasta sauce, chili, soup, braises, and stew. It provides body and thickens sauces without diluting flavor. Tomato paste can also be used to make your own tomato ketchup or blended into tomato soup.
How long does tomato paste last in the freezer?
Tomato paste that has been continuously frozen will keep for 2-3 months in airtight packaging. Be sure to label frozen containers with the date. Portion into recipe-ready amounts so you can thaw just what you need.
Can you substitute tomato paste for tomato sauce?
Tomato paste and tomato sauce are not directly interchangeable in recipes due to differences in consistency. As a general substitution ratio, use 2 to 3 tablespoons of tomato paste per 1 cup of tomato sauce. Add a liquid like water or broth to thin out the paste consistency. Adjust seasoning since tomato paste is more concentrated.
What happens if you eat spoiled tomato paste?
Consuming spoiled tomato paste can cause food poisoning symptoms like nausea, vomiting, stomach cramps, and diarrhea. Moldy tomato paste may contain mycotoxins that can cause long-term health effects. Don’t risk getting sick – discard tomato paste at the first signs of spoilage.
Storing Tomato Paste for Maximum Freshness
Proper storage methods can help maximize the shelf life of tomato paste after opening. Here’s a quick summary of tomato paste storage best practices:
- Refrigerate after opening
- Transfer to an airtight container
- Minimize air exposure
- Use within 3-4 days
- Label container with date
- Freeze extra amounts for longer storage
Following these simple guidelines will keep opened tomato paste fresher for longer. Taking a few minutes to transfer and properly store leftovers saves time and reduces food waste. Make sure to refrigerate tomato paste promptly after use and store in suitable airtight containers. This preserves the quality and locks in the rich, concentrated tomato flavor that makes recipes delicious.
