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Ingredients

Ingredient Checklist

Directions

Instructions Checklist
  • Heat oil in a medium saute pan over low heat. Add onion, zest, and thyme; saute until onion is soft, 8 to 10 minutes.

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  • Add 8 ounces tomatoes along with the salt, sugar, and cayenne. Cook until liquid has evaporated and tomato mixture thickens to a paste, about 10 minutes.

  • Remove from heat, and add remaining 12 ounces tomatoes. Transfer mixture to the jar of a blender, and puree until smooth. Pass through a fine sieve into a large bowl. Chill strained mixture over an ice bath or in the refrigerator. Transfer to an ice-cream maker, and freeze according to manufacturer's directions. Store in freezer until ready to use, up to 1 week.

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