Summer's bounty of ripe, juicy tomatoes is the perfect time to create a pantry staple: homemade canned tomato soup. This comprehensive guide will walk you through a foolproof recipe, ensuring your efforts result in delicious, shelf-stable soup for the colder months ahead. We'll cover everything from selecting the right tomatoes to proper sterilization techniques, making this canning process safe and enjoyable.
Choosing Your Tomatoes for Canning
The quality of your tomatoes significantly impacts the flavor of your canned soup. Opt for flavorful, ripe tomatoes—heirloom varieties often offer a depth of flavor that's hard to match. Avoid tomatoes that are bruised, damaged, or overripe. Roma tomatoes, with their low water content and thick flesh, are a popular choice for canning due to their ability to produce a richer, less watery soup.
Ingredients You'll Need:
- 12 cups ripe tomatoes, peeled and chopped (approximately 6 pounds)
- 1 medium onion, chopped
- 2 cloves garlic, minced
- 1 teaspoon dried basil
- 1/2 teaspoon dried oregano
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 2 tablespoons butter or olive oil (optional, for richer flavor)
Detailed Instructions: Making Your Tomato Soup
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Prepare the Tomatoes: Wash and peel your tomatoes. Blanching them in boiling water for about 30 seconds then plunging them into ice water makes peeling much easier. Chop the tomatoes into roughly 1-inch pieces.
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Sauté Aromatics (Optional): If desired, sauté the chopped onion and minced garlic in butter or olive oil until softened. This step adds depth of flavor to your soup.
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Combine Ingredients: In a large pot, combine the chopped tomatoes, sautéed aromatics (if using), basil, oregano, salt, and pepper. Bring the mixture to a simmer over medium heat.
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Simmer and Reduce: Reduce the heat to low and simmer the tomato mixture for at least 30 minutes, or up to an hour, stirring occasionally. This allows the flavors to meld and the soup to thicken slightly. You can use an immersion blender to partially puree the soup for a smoother consistency, if desired.
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Canning Process: Sterilize your jars and lids in boiling water for at least 10 minutes. This crucial step prevents contamination and ensures your soup remains safe to eat. Follow the manufacturer's instructions for your specific pressure canner.
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Fill the Jars: Carefully ladle the hot tomato soup into the sterilized jars, leaving about 1/2-inch headspace. Remove air bubbles by running a non-metallic utensil around the inside of the jars. Wipe the rims clean and securely attach the lids and rings.
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Process in a Pressure Canner: Process the jars in a pressure canner according to the instructions provided for your specific canner and altitude. Processing time will vary depending on your altitude; always consult a reliable canning guide for accurate processing times to ensure safe canning.
Frequently Asked Questions (PAAs)
How long does canned tomato soup last?
Canned tomato soup, processed correctly, can last for 12-18 months in a cool, dark pantry. Always check for any signs of spoilage before consuming, such as bulging lids or a foul odor.
Can I freeze tomato soup instead of canning it?
Yes, freezing tomato soup is a great alternative to canning. Simply allow the soup to cool completely before freezing it in airtight containers. Frozen tomato soup will typically last for 3-6 months.
What are the best types of jars for canning tomato soup?
Wide-mouth mason jars are ideal for canning tomato soup, as they make filling and removing the soup easier. Ensure you use jars specifically designed for canning.
What happens if I don't process my canned tomato soup long enough?
Insufficient processing time can lead to spoilage and the risk of botulism, a serious foodborne illness. Always follow the recommended processing times for your altitude to ensure the safety of your canned goods.
Tips for Success:
- Use a good quality pressure canner: Investing in a reliable pressure canner is essential for safe canning.
- Always follow tested recipes and instructions: Improper canning techniques can lead to foodborne illness.
- Inspect your jars carefully: Check for any cracks or chips before using.
- Label your jars clearly: Include the date and contents.
This detailed guide provides a comprehensive approach to canning tomato soup. Remember, safety is paramount—always prioritize accurate processing times and meticulous sterilization techniques. With practice, you'll become a canning expert, enjoying the delicious reward of homemade tomato soup all year round!
