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You can can tomato basil soup, and it’s one of the most rewarding ways to preserve the fresh garden flavors of summer.
Canning tomato basil soup at home is absolutely safe when you follow a trusted, tested recipe and use the proper equipment.
The big question for many home cooks is whether you can can tomato basil soup as a creamy soup or if you need to make adjustments.
In this post, we’ll explore the ins and outs of canning tomato basil soup, including the safety rules you must follow, the best methods, and how to get that delicious flavor sealed in a jar.
Let’s dive right in.
Why You Can Can Tomato Basil Soup the Right Way
The reason you can can tomato basil soup revolves around acidity and food safety.
Tomatoes are naturally high in acid, which makes them a prime candidate for water bath canning.
But when you add basil and other ingredients, you have to be careful about the pH levels.
The question, “can you can tomato basil soup,” is really about how you handle the ingredients to keep the mixture safe.
1. Acidity Is Your Best Friend
Tomatoes have a pH that typically falls below 4.6, which is the magic number for safe water bath canning.
However, the pH can vary depending on the variety of tomato, how ripe they are, and where they were grown.
To be safe, you should always add a bottled lemon juice or citric acid to your tomato basil soup before canning.
This extra acid kick guarantees that your canned soup stays safe from botulism and other harmful bacteria.
So yes, you can can tomato basil soup, but only when you’ve ensured the acidity is within safe limits.
2. You Can Can Tomato Basil Soup But Not the Creamy Version
The biggest mistake people make is trying to can a creamy tomato basil soup with milk, cream, or cheese.
Dairy products are low in acid and can harbor dangerous bacteria when canned improperly.
You can can tomato basil soup that is broth-based or pureed with just tomatoes, basil, and a bit of onion or garlic.
If you love that creamy texture, simply can the soup base without dairy and add fresh cream when you reheat it.
This way, you get the flavor of a creamy tomato basil soup in a jar without risking your family’s health.
3. Pressure Canning Is Another Option
If you’re determined to can a soup with added low-acid ingredients, a pressure canner is your ticket.
A pressure canner heats the soup to a much higher temperature, above 240°F, which destroys botulism spores.
You can can tomato basil soup using a pressure canner with more flexibility in your ingredient list.
Still, even with a pressure canner, dairy should be added fresh later because it can separate and become gritty.
So the answer to “can you can tomato basil soup” is a confident yes, just be smart about your method.
How to Can Tomato Basil Soup at Home
Now that we’ve established you can can tomato basil soup, let’s walk through the steps to do it successfully.
This process will give you jars of bright, summery soup that are shelf-stable for up to a year.
1. Start with the Freshest Ingredients
Gather about 10 pounds of ripe tomatoes, a large bunch of fresh basil, onions, garlic, and your acid of choice.
Wash your tomatoes thoroughly and remove any bruised spots.
Blanch the tomatoes in boiling water for 60 seconds, then transfer them to an ice bath so the skins slip off easily.
Core the tomatoes and chop them into large chunks.
The quality of your tomatoes directly affects the flavor of your canned soup, so choose the best you can find.
2. Simmer the Soup Base
In a large stainless steel pot, sauté your chopped onions and garlic in a little olive oil until they’re soft and fragrant.
Add the chopped tomatoes, and bring the mixture to a gentle simmer.
Let it cook for about 30 to 40 minutes so the flavors meld together.
Add your fresh basil leaves and simmer for another 10 minutes.
After this, you can puree the mixture with an immersion blender for a smooth texture, or leave it chunky.
Remember, you can can tomato basil soup with or without pureeing, just make sure it’s the consistency you love.
3. Add the Acid and Jar It Up
Before filling your jars, add 1 tablespoon of bottled lemon juice or 1/4 teaspoon of citric acid to each pint jar.
For quart jars, double that amount.
Ladle the hot soup into the jars, leaving 1/2 inch of headspace at the top.
Remove air bubbles with a bubble remover or a chopstick.
Wipe the jar rims clean with a damp cloth, then place on your lids and screw on the bands until they are fingertip-tight.
4. Process in a Boiling Water Bath
Place your filled jars in a canner with enough hot water to cover them by at least 1 to 2 inches.
Bring the water to a rolling boil, then start your timer.
For pints, process for 35 minutes.
For quarts, process for 40 minutes.
If you live at an altitude above 1,000 feet, you’ll need to adjust your processing time, so always check a reliable chart.
When the time is up, turn off the heat, let the jars sit in the water for 5 minutes, then lift them out carefully.
Let them cool completely on a towel-lined counter, and listen for the satisfying “pop” of sealed lids.
Flavor Variations When You Can Tomato Basil Soup
You can can tomato basil soup and still have fun experimenting with the flavor profile.
While the basic recipe is delicious on its own, you can add other safe ingredients to make it your own.
1. Roasted Tomatoes for Deeper Flavor
Roasting your tomatoes before making the soup adds a smoky, caramelized depth that’s amazing.
Spread halved tomatoes on a baking sheet, drizzle with olive oil, and roast at 400°F for 40 minutes.
Then use those roasted tomatoes in your soup base as usual.
You’ll still need to add acid, but the end result tastes like you spent hours in a restaurant kitchen.
2. Add Carrots or Celery
Diced carrots and celery are perfectly safe to add to your tomato basil soup before canning.
These vegetables are low in acid, so keep the total ratio of added veggies below 50 percent of the total volume.
You still must process the jars the same way, adding your lemon juice as directed.
This gives your soup a heartier, more complex flavor while staying within safe canning guidelines.
3. Use Different Herbs
Basil is the star of the show, but you can also add a sprig of oregano, thyme, or rosemary.
Herbs are completely safe for water bath canning as long as they are dried or fresh and not in an oily paste.
Just remember to remove large stems before canning, as they can become tough and bitter.
So the next time you ask, “can you can tomato basil soup,” know that you have room for creativity.
So, Can You Can Tomato Basil Soup?
Yes, you can can tomato basil soup safely and easily at home with the right process.
Skip the dairy, boost the acidity with lemon juice or citric acid, and use a boiling water bath for the best results.
You can can tomato basil soup as a smooth puree, a chunky vegetable mix, or a roasted variation.
Pressure canning is also an option if you want to add more low-acid ingredients, but always keep dairy out of the jar.
We hope this guide answered your question about whether you can can tomato basil soup and gave you the confidence to get started.
Enjoy the taste of fresh garden basil and tomatoes all year round, straight from your pantry shelf.