Tomato-Roasted Garlic Freezer Jam Recipe

By
Kumiko Mitarai
Kumiko Mitarai wrote the "Technique of the Week" column for Serious Eats. In it, she demonstrated cooking techniques that seem easy but are hardly ever explained.
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Updated March 25, 2025
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Recipe Details

Tomato-Roasted Garlic Freezer Jam Recipe

Prep 10 mins
Total 10 mins
Cook Mode (Keep screen awake)

Ingredients

  • 4 cups very ripe cherry tomatoes

  • 2 heads of garlic cloves, roasted

  • 1 1/4 teaspoons kosher salt

  • Freshly ground black pepper to taste

  • 1/2 cup of light brown sugar

  • Pectin (See below)

Directions

  1. To make about 3 cups, use a blender or food processor to pulse together 4 cups very ripe cherry tomatoes, the roasted cloves of 2 heads of garlic (wrap them in foil and bake at 325°F for about an hour until soft and lightly caramelized), 1 1⁄4 teaspoons Kosher salt, and freshly ground black pepper to taste.

  2. If using Ball instant fruit pectin: Mix together 1⁄2 packet of the pectin with 1⁄2 cup of light brown sugar. Stir the sugar/pectin into the tomato mixture.

  3. If using Pomona's Universal: Mix the brown sugar into the tomato mixture and then prepare the pectin by blending 3 fluid ounces of boiling water with 1 1⁄2 teaspoons pectin. Add this pectin liquid to the tomato mixture and slowly stir in 3 teaspoons of prepared calcium water.

Nutrition Facts (per serving)
712Calories
2gFat
179gCarbs
10gProtein
×
Nutrition Facts
Amount per serving
Calories712
% Daily Value*
Total Fat 2g2%
Saturated Fat 0g1%
Cholesterol 0mg0%
Sodium 1739mg76%
Total Carbohydrate 179g65%
Dietary Fiber 13g48%
Total Sugars 105g
Protein 10g
Vitamin C 100mg502%
Calcium 260mg20%
Iron 5mg27%
Potassium 1813mg39%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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