How to Can Tomatoes
How to Can Tomatoes: The Complete Guide for Beginners
Canning your own tomatoes is a rewarding way to preserve the fresh taste of summer all year long. Whether you’re growing your own garden tomatoes or buying local farm-fresh produce, canning allows you to enjoy healthy, delicious tomatoes anytime.
In this guide, I’ll walk you through everything you need to know about how to can tomatoes safely and efficiently.
Why You Should Can Your Own Tomatoes
Home-canned tomatoes are:
- Fresh and flavorful: You control the ripeness and quality.
- Free from preservatives: Unlike store-bought, you know exactly what’s in your jars.
- Economical: Canning in bulk saves money.
- Versatile: Perfect for sauces, soups, salsas, and more.
Check out my post on growing tomatoes from seed if you want to start with your own garden produce.
What You’ll Need to Can Tomatoes
Before we begin, make sure you have the proper equipment:
Equipment
- Canning jars: Pint or quart size with lids and bands
- Large stockpot or canner: For processing jars
- Jar lifter: To safely remove hot jars
- Funnel: For easy filling
- Ladle: To transfer tomatoes into jars
- Cutting board and knife
Ingredients
- Fresh, ripe tomatoes
- Bottled lemon juice or citric acid (for acidity)
- Salt (optional, for taste)
Tip: Always use fresh, unblemished tomatoes for the best results.
Step-by-Step Guide to Canning Tomatoes
1. Prepare Your Jars and Lids
Wash your jars, lids, and bands in hot, soapy water. Sterilize jars by boiling them for 10 minutes. Keep the lids in hot water (do not boil) until ready to use.
2. Prepare the Tomatoes
- Wash and remove skins:
- Bring a pot of water to a boil.
- Cut a small “X” at the bottom of each tomato.
- Blanch tomatoes in boiling water for 30-60 seconds.
- Transfer to an ice bath. The skins will peel off easily.
- Core and chop: Remove stems and core tomatoes. You can leave them whole, halved, or chopped, depending on preference.
3. Add Acid
Add 2 tablespoons of bottled lemon juice per pint jar (or 4 tablespoons per quart) to ensure safe acidity. If using citric acid, add 1/2 teaspoon per pint or 1 teaspoon per quart.
4. Pack Tomatoes into Jars
- Whole or Halved Tomatoes: Pack tightly, leaving 1/2 inch of headspace.
- Crushed Tomatoes: Fill jars, leaving 1/2 inch of headspace.
Optional: Add 1 teaspoon of salt per pint for flavor.
5. Remove Air Bubbles
Use a non-metallic spatula or chopstick to remove trapped air bubbles. Wipe the rims clean before sealing.
6. Seal the Jars
Place lids on jars and screw bands finger-tight. Do not overtighten.
7. Process in a Boiling Water Bath
- Place jars in a boiling water canner, ensuring water covers jars by at least 1 inch.
- Bring water to a boil and process:
- Pints: 35 minutes
- Quarts: 45 minutes
- Adjust processing time for altitude if necessary.
8. Cool and Store
- Remove jars using a jar lifter.
- Place on a towel to cool for 12-24 hours.
- Check seals: lids should not flex when pressed.
- Store in a cool, dark place.
Tip: Properly canned tomatoes can last up to 12-18 months.
Common Mistakes to Avoid When Canning Tomatoes
- Skipping the acid: Tomatoes vary in acidity, so adding lemon juice or citric acid is essential for safety.
- Overfilling jars: Leave proper headspace to allow for expansion.
- Not sterilizing jars: Can lead to spoilage.
- Ignoring processing time: Always follow recommended processing times for your jar size.
How to Use Your Canned Tomatoes
Canned tomatoes are incredibly versatile. Try them in:
- Homemade pasta sauces
- Chili recipes
- Tomato soup or stews
- Salsa or bruschetta
Check out my easy chili recipe here for a perfect use of your canned tomatoes!
Tips for Success
- Choose ripe, firm tomatoes for best flavor.
- Avoid overripe or damaged tomatoes to prevent spoilage.
- Keep a record of processing dates to ensure freshness.
- Use pint jars for small families and quart jars for larger meals.
Frequently Asked Questions About Canning Tomatoes
Q: Can I can tomatoes without salt?
A: Yes, salt is optional. It enhances flavor but is not required for safety.
Q: How long do canned tomatoes last?
A: When stored in a cool, dark place, they last 12-18 months.
Q: Can I freeze tomatoes instead of canning?
A: Yes, freezing is an alternative, but canning offers longer shelf life and better texture for sauces.
Canning tomatoes is a satisfying way to preserve the taste of summer. With the right tools, fresh tomatoes, and careful attention to safety, you’ll have a pantry full of delicious, home-canned tomatoes ready to use in countless recipes.
Enjoy the process—there’s something magical about turning garden-fresh tomatoes into a jar of preserved goodness that will brighten meals for months to come!
