Making your own canned tomato soup is a rewarding experience, offering a taste of summer sunshine even during the coldest winter months. This guide provides a comprehensive approach to creating delicious, safe, and shelf-stable homemade tomato soup. We'll cover everything from selecting the right tomatoes to ensuring proper canning techniques for optimal results.
What Kind of Tomatoes Are Best for Canning Tomato Soup?
The ideal tomatoes for canning soup are those with a rich, full flavor and a good balance of acidity. Roma tomatoes are a popular choice due to their meaty texture and low water content, which results in a thicker, less watery soup. However, you can also successfully use other varieties like heirloom tomatoes (though the final color might vary slightly) or a combination for a more complex flavor profile. Avoid using tomatoes that are overly ripe, bruised, or showing signs of disease.
How Do I Make Tomato Soup for Canning?
This recipe provides a delicious base; feel free to experiment with herbs and spices to personalize your soup.
Ingredients:
- 6 pounds ripe tomatoes, peeled and chopped
- 1 medium onion, chopped
- 2 cloves garlic, minced
- 2 tablespoons olive oil
- 1 teaspoon dried basil
- 1/2 teaspoon dried oregano
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 1 cup vegetable broth (or chicken broth for a richer flavor)
- Optional: 1/4 cup heavy cream or milk (added after canning for a creamier texture)
Instructions:
- Prepare the Tomatoes: Wash, peel, and chop the tomatoes. There are several ways to peel tomatoes—blanching is a common and effective method.
- Sauté Aromatics: Heat the olive oil in a large pot over medium heat. Add the onion and sauté until softened, about 5 minutes. Add the garlic and cook for another minute until fragrant.
- Simmer the Soup: Add the chopped tomatoes, basil, oregano, salt, and pepper to the pot. Stir well and bring to a simmer. Reduce heat and cook for 20-30 minutes, stirring occasionally, until the tomatoes have softened.
- Blend (Optional): For a smoother soup, use an immersion blender to partially or fully blend the mixture. If you prefer a chunkier soup, skip this step.
- Add Broth: Stir in the vegetable broth. Simmer for another 10 minutes to allow the flavors to meld.
- Canning Process: Ladle the hot soup into sterilized jars, leaving 1/2 inch headspace. Remove air bubbles, wipe the rims clean, and place the lids and rings. Process in a boiling water bath according to your jar manufacturer's instructions. Processing times will vary depending on altitude and jar size.
What is the Boiling Water Bath Method for Canning Tomato Soup?
The boiling water bath method is a safe and effective way to preserve low-acid foods like tomato soup. It involves submerging sealed jars of soup in boiling water for a specific amount of time to destroy harmful bacteria and create a vacuum seal. This ensures the soup remains safe and shelf-stable for an extended period. Always follow the instructions provided by the National Center for Home Food Preservation (NCHFP) for safe processing times based on your altitude.
How Long Does Canned Tomato Soup Last?
Properly canned tomato soup, stored in a cool, dark, and dry place, can last for 12-18 months. Always check the jars for any signs of spoilage (bulging lids, leaking, unusual odors) before consuming. If any of these signs are present, discard the jar immediately.
Can I Freeze Homemade Tomato Soup Instead of Canning It?
Yes, freezing homemade tomato soup is another excellent preservation method. Allow the soup to cool completely before transferring it to freezer-safe containers, leaving some headspace for expansion. Frozen soup typically lasts for 3-6 months.
Is it Safe to Can Tomato Soup Without a Pressure Canner?
For low-acid foods like tomato soup, a pressure canner is generally not required. The boiling water bath method is sufficient to destroy harmful bacteria, but it's crucial to carefully follow the recommended processing times to ensure safety. Improper canning techniques can lead to botulism, a serious and potentially fatal illness. Always consult reliable sources like the NCHFP for detailed instructions.
What are the Best Jars to Use for Canning Tomato Soup?
Wide-mouth canning jars are generally preferred for canning soups, as they are easier to fill and clean. Ensure that your jars are in good condition, without any chips or cracks. Using new lids and rings is essential for creating a proper seal.
By following these steps and prioritizing safety, you can enjoy the delicious taste of homemade tomato soup year-round. Remember, safety is paramount when canning. Always refer to reputable sources for detailed information and instructions.
