Soups & Stews
Transforming fresh garden tomatoes into canned tomato puree is one of the most rewarding ways to preserve summer’s bounty for year-round cooking. This concentrated, velvety puree forms the backbone of soups, sauces, and stews—its rich, deep flavor unlocking endless possibilities in your kitchen.
The process is straightforward but requires precision, especially when it comes to acidification and proper canning techniques to ensure safety and longevity.
What sets this recipe apart is its versatility and simplicity—just tomatoes, a touch of acidity, and basic spices come together to create a pantry staple that’s infinitely more flavorful than anything store-bought.
The key lies in simmering the tomatoes until they break down into a smooth, thick consistency, then straining out the skins and seeds for a silky texture. Pressure canning guarantees shelf stability, while water bath canning works for smaller batches or as a shortcut for short-term storage.
By the end, you’ll have jars of golden tomato puree that deepen in flavor with time, perfect for building homemade marinara, braising meats, or enriching hearty winter dishes. Each batch yields about seven pints, making it ideal for stocking your pantry for the colder months.
The process takes about two hours from start to finish, but the results are worth every minute of effort—imagine the depth of flavor you’ll add to your cooking all year long.
Whether you’re a seasoned canner or trying your hand at preserving for the first time, this method delivers professional-quality results with minimal fuss. The puree keeps for up to a year when stored properly, so you’ll always have a reliable base for your favorite recipes.
Let’s get started on turning your tomatoes into liquid gold.
Ingredients for canning tomato puree
Simple ingredients, big flavor—transform summer tomatoes into rich, versatile puree for all-year cooking.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Tomatoes 🍅 | 10 lb | Ripe, vine-ripened preferred |
| White Vinegar 🍶 | ½ cup | For acidification (5% acidity) |
| Salt 🧂 | 2 tbsp | Kosher or sea salt |
| Garlic Cloves 🧄 | 4 cloves | Minced for depth |
| Black Peppercorns 🌶️ | 1 tsp | Coarsely crushed |
| Dried Basil 🌿 | 1 tbsp | Or 1 tbsp fresh chopped |
| Dried Oregano 🍃 | 1 tsp | Italian oregano preferred |
| Sugar 🍚 | ½ cup | Balances acidity |
| Pint-Sized Canning Jars 🥫 | 7 whole | Mason jars with lids |
Tomatoes are the heart of this—heirloom or vine-ripened deliver the best flavor, but any ripe tomato works. Hit up farmers markets in late summer for the freshest haul, or grab organic Roma tomatoes from Whole Foods if you're shopping. Look for tomatoes that yield slightly to gentle pressure, but aren't mushy. The vinegar is non-negotiable for safety—it's what prevents botulism in home-canned goods. White vinegar is traditional, but apple cider vinegar works too. Just make sure it's real vinegar, not that flavored stuff. The sugar balances the acidity, so don't skip it—even if you're not sweetening the final product.
No fresh basil? Dried works fine, but use half the amount. Short on vinegar? Lemon juice at the same quantity is a decent swap, though it'll add a slightly different tang. Want more depth? Add a pinch of red pepper flakes for heat. The garlic can be roasted first for a sweeter flavor—just toss whole cloves on a baking sheet at 400°F for 10 minutes before mincing. For the jars, Ball or Kerr brands are the gold standard, but any reputable canning jar will do. Just make sure they're clean and free of chips or cracks.
Once canned, your puree will keep for up to a year in a cool, dark pantry. The flavor actually improves over time, so label jars with the date. For water bath canning, process pints for 45 minutes—adjust for altitude if you're above 1,000 feet. Pressure canning? 10 pounds pressure for 35 minutes seals it for long-term storage. Portion into ice cube trays before freezing if you want single-use servings—perfect for sauces or soups. And if you end up with extra? Freeze it in quart bags for 6 months.
Why You'll Love This Recipe
- No-Fuss Preservation: I’ll be real—canning this puree is about as hands-off as homemade gets. Simmer tomatoes, crush garlic, and let the vinegar do the work while you sip coffee. The jars seal themselves; no fancy tools, no stress.
- Umami Bomb: That vinegar-brined garlic and peppercorn punch? It turns bland sauce into flavor. A single spoonful in pasta or stew makes everything taste like you spent hours simmering—when you barely did.
- Pantry Powerhouse: I keep a jar in my fridge for quick soups, braises, or even as a marinade base. Freeze extras for winter—no waste, just versatility. Honestly, it’s my go-to for when I forget to meal prep.
- Budget-Friendly Staple: Fresh tomatoes at peak season? Buy a bushel, can it, and stretch your dollar through the year. A few jars cost less than store-bought sauce, and they taste like summer all winter long. (Yes, even on a Tuesday night.)
Step-by-step instructions for canning tomato puree
Here's how to transform garden-fresh tomatoes into shelf-stable puree that's ready for soups, sauces, and more.
Prepare and Sterilize Your Equipment
Start by thoroughly washing the 7 whole pint-sized canning jars and their lids in hot, soapy water. Place the jars on a clean kitchen towel and set them in a 250°F oven for 10 minutes to sterilize. Meanwhile, prepare a large stockpot by adding 10 lb fresh tomatoes—cut them into quarters and remove stems. You'll want to peel them if you prefer smooth puree, but leaving skins adds texture.
While the jars heat, crush the 4 cloves garlic and coarsely crush the 1 tsp black peppercorns in a mortar and pestle or with the side of a knife. This releases their flavors for maximum infusion into the puree. Keep everything ready—you'll be working quickly once the tomatoes start cooking.
Cook Tomatoes Until Soft and Break Down
Transfer the quartered tomatoes to the stockpot and add 0.5 cup white vinegar, 2 tbsp salt, 1 tbsp dried basil, and 1 tsp dried oregano. Stir gently to combine, then bring to a boil over medium-high heat. Once boiling, reduce heat to medium-low and let it simmer uncovered for 45-60 minutes, stirring occasionally. You're looking for tomatoes that break down easily when pressed with a spoon—this ensures smooth puree.
After 45 minutes, add the 0.5 cup sugar and the crushed garlic and peppercorns. Stir well and continue simmering for another 15 minutes. The sugar helps balance the acidity from the vinegar while enhancing the tomatoes' natural sweetness. Taste the mixture—it should be rich, slightly tangy, and well-seasoned. If needed, adjust salt or vinegar to your preference.
Puree and Fill the Sterilized Jars
Use an immersion blender to puree the tomatoes directly in the pot, working in batches if needed. If you don’t have an immersion blender, carefully transfer the cooked tomatoes to a food processor or blender in small batches, then return the puree to the pot. The puree should be smooth but still slightly thick—like a rich, velvety sauce. If it’s too thick, add a little hot water to reach your desired consistency.
Ladle the hot puree into the sterilized pint-sized jars, leaving ½-inch headspace at the top. Use a ladle or spoon to remove any foam or bubbles that rise to the surface. Wipe the jar rims with a clean, damp cloth to ensure a proper seal. This step is critical—any residue can prevent the lids from sealing correctly.
Process the Jars for Safe Preservation
Place the filled jars onto a canning rack in a large pot, ensuring they’re covered by at least 1-2 inches of water. Bring the water to a gentle boil and process the jars for 45 minutes if using a boiling-water bath method. The water should simmer steadily—not roll over or boil vigorously—which could cause the jars to break or the lids to fail.
After processing, carefully remove the jars with tongs and let them cool undisturbed on a towel for 12-24 hours. You’ll hear a satisfying ping as the lids seal. Check each lid by pressing the center—if it doesn’t pop back up, the jar is sealed. Store the sealed jars in a cool, dark place for up to 12 months. If any jars don’t seal, refrigerate and use within a week.
Test and Use Your Homemade Puree
Once cooled, open a jar to test your puree. It should have a deep, rich color and a balanced flavor—sweet from the tomatoes, tangy from the vinegar, and aromatic from the herbs and garlic. If the puree is too thick, thin it with water or broth when using. This versatile puree is perfect for soups, marinara sauce, stews, or even as a base for homemade tomato paste.
To use, simply open a jar and stir well. The puree will keep its quality for months, making it a fantastic pantry staple. Freeze any unused portions in ice cube trays for smaller servings. Enjoy the satisfaction of knowing you’ve preserved the essence of summer in every jar!
Pro Tips For Making Canning Tomato Puree
- Boil Tomatoes First: Drop whole tomatoes into boiling water for 30 seconds before peeling—it softens the skins so they slip off effortlessly. I learned this the hard way after struggling with stubborn skins that tore my hands up mid-canning.
- Use Vinegar Sparingly: Add vinegar after canning, not before—just 1 tablespoon per quart jar during processing. Too much upfront makes the puree taste harsh, and you’ll regret it when you’re spooning it into sauces later.
- Crush Garlic, Don’t Chop: Smash garlic cloves flat with the side of your knife instead of mincing—it infuses flavor without turning the puree gritty. I used to over-chop and ended up with a texture like tomato sand.
- Skim Foam Aggressively: After simmering tomatoes, skim off the thick foam that rises—it’s full of bitter compounds. Use a slotted spoon and don’t rush; 5 minutes of skimming makes a noticeable difference in smoothness.
Regional styles of canning tomato puree
Southern Italian Style
In Southern Italy, tomato puree often incorporates roasted garlic and fresh basil for a more complex flavor profile. I like to roast 6 whole garlic cloves at 400°F for 15 minutes before mincing, then add them to the simmering tomatoes along with 2 tbsp fresh basil (chopped) instead of dried.
The result is a sweeter, more aromatic puree perfect for Neapolitan-style sauces or pasta alla Norma. 🌿
Texas BBQ Twist
Texas pitmasters love using tomato puree as a base for their slow-cooked meats. For a smoky variation, add 1 tbsp smoked paprika and ½ tsp cayenne pepper to the simmering tomatoes.
After canning, this puree becomes the backbone of brisket sauces or chili rubs. I’ve seen it used in Texas-style BBQ beans too—just thicken it with a roux for extra richness. 🔥
Spanish Sofrito Base
Spanish cuisine transforms tomato puree into sofrito, a flavorful base for paella and stews. For this version, sauté 1 diced onion, 2 minced garlic cloves, and 1 tsp ground cumin in olive oil before adding the tomatoes.
Simmer the mixture for 10 minutes before straining and canning. The result is a deeper, earthier puree that pairs perfectly with seafood dishes or arroz negro. 🍲
Mediterranean Herb Infusion
Greek and Turkish kitchens often enhance tomato puree with fresh herbs like oregano and thyme. Add 1 tbsp fresh oregano and 1 tsp dried thyme to the simmering tomatoes, along with 1 tsp red pepper flakes for heat.
This variation works beautifully in Greek moussaka or Turkish lentil soups, where the herbs add a bright, aromatic note. 🌶️
French Tomato Concentrate
In France, tomato puree is often reduced to a thicker consistency for sauces and soups. After simmering, strain the puree through a fine-mesh sieve to remove all seeds and skins, then reduce it on the stovetop until it reaches a syrup-like thickness (about 1 hour of simmering).
This concentrated version is perfect for French onion soup or boeuf bourguignon. 🍷
Mexican Salsa Base
For a Mexican-inspired twist, add 1 chopped chipotle pepper in adobo sauce and 1 tsp ground cumin to the simmering tomatoes. After canning, this puree becomes the foundation for smoky salsas or taco sauces.
I’ve used it in chiles rellenos and pozole for a rich, smoky depth that’s hard to match with store-bought versions. 🌶️
Nutrition facts
Frequently asked questions
Can I use canned tomatoes instead of fresh for this puree?
Fresh tomatoes yield the best flavor, but you can use high-quality canned tomatoes in a pinch. Opt for whole peeled tomatoes (not diced) with minimal added salt, and simmer them for 30-45 minutes longer to achieve the same thickness. Drain and rinse them first to reduce excess sodium. The texture will be slightly different but still functional for soups and sauces.
Why do I need to add vinegar or lemon juice?
The vinegar (or lemon juice) is critical for safety—it creates the proper acidity level to prevent botulism in home-canned goods. Tomatoes alone aren't acidic enough for safe canning. The 0.5 cup white vinegar in this recipe ensures the puree meets USDA guidelines for acidified foods. Never skip this step, even if your tomatoes taste tart.
How do I know when my puree is ready for canning?
Your puree is ready when it's smooth, thick, and breaks down easily when pressed with a spoon. It should coat the back of a spoon like a rich sauce. If it's too thin, simmer uncovered for 10-15 more minutes to reduce. For extra smoothness, strain through a fine-mesh sieve before filling jars. The puree should also have a deep, concentrated tomato flavor—not watery or bland.
Can I adjust the seasoning after canning?
No—once canned, the puree is shelf-stable and shouldn't be re-opened and re-canned. Season to taste before filling the jars. For extra flavor flexibility, make small batches with different herb blends (like the regional variations in the article) and store them separately. If you need to adjust acidity later, thin with water or broth when using, but avoid adding more vinegar after canning.
What if my jars don't seal properly?
If a jar doesn't seal (lid pops up when pressed), refrigerate it and use within 1 week. Common causes include: not enough headspace (½-inch minimum), dirty jar rims, or insufficient processing time. For future batches, check seals immediately after cooling (12-24 hours) and reprocess any that fail. Never eat unsealed canned goods—botulism risk is too high.