Ingredients
- 14 lbs. Roma- or paste-type tomatoes
- 1 tsp. citric acid (mandatory)
- 2 bay leaves
- 1 tsp. canning or pickling salt
- 1 clove of garlic (optional)
- 8-9 Wide mouth half pint jars
Directions
- Wash, remove stems, and trim tomatoes of any bruised or discolored parts.
- Working quickly and with 1 lb. of tomatoes at a time, quarter the tomatoes and place in a large saucepan.
- Bring the tomatoes to a boil as you crush them with a potato masher or large spoon.
- Continue adding the quartered tomatoes, cutting them up as you work.
- Keep mashing the tomatoes over high heat until all pieces have been added.
- Let the tomatoes simmer for 1 hour, stirring as needed to prevent the tomatoes from burning or sticking to the bottom of the saucepan.
- Transfer the thickened, crushed tomatoes to a food mill or sieve and remove skins and seeds.
- Return the tomatoes back to the saucepan. Add the citric acid and stir until completely combined with the crushed tomatoes.
- Add up to 1 teaspoon of pickling salt, the bay leaves, and garlic clove (if using).
- Continue to cook the tomatoes over medium heat, stirring frequently, for another 2 1/2 hours (or until the tomato mixture has been reduced by half and “stands” or “heaps” on a spoon).
- As the tomato paste thickens, prepare a boiling water canner, 2-part lids, and half-pint jars.
- When the tomato paste has reduced by half, distribute the hot tomato paste among the heated jars, leaving 1/2-inch headspace.
- Seal each jar with 2-part lids and process in a water bath canner for 45 minutes, adjusting the time as needed depending on the altitude.
- Turn off the heat and give the processed jars 5 minutes to acclimatize before transferring them to a clean towel (use a jar lifter if you one). This extra 5 minutes allows them to cool slightly before they’re removed from the canner, and helps prevent siphoning.
- Arrange the jars lid-side up, without touching, and let them sit for 12 to 24 hours at room temperature.
- Remove the rings and check to make sure the lids are sealed. Move any unsealed jars to the fridge.
- Label jars with the date and contents. Properly canned and sealed jars should maintain quality on the pantry shelf for 12-18 months. Store in the refrigerator once opened.