- 21 lbs firm, ripe tomatoes (about 3 lbs per quart jar)
- 2 tablespoons per quart jar, or 1 tablespoon per pint jar Bottled lemon juice
- ½ teaspoon per quart, or ¼ teaspoon per pint Citric acid (alternative to lemon juice)
- 1 teaspoon salt per quart, optional (for flavor only, not for safety)
- Water, as needed for the canning liquid