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Jar of ketchup with a wooden spoon with ketchup on it.

Fermented Ketchup

A homemade fermented ketchup recipe using simple pantry ingredients.
4.23 from 126 votes
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Course: Condiment
Cuisine: American
Prep Time: 10 minutes
Fermentation Time: 6 hours
Total Time: 6 hours 10 minutes
Servings: 32 tablespoons
Calories: 20kcal
Author: Carolyn Thomas

Ingredients

  • 1 ½ cups tomato paste homemade or canned
  • cup maple syrup or sugar, monk fruit, honey
  • 1 Tablespoon Worcestershire Sauce
  • teaspoon ground cloves
  • teaspoon ground cinnamon
  • 1 teaspoon fine salt
  • 2 tablespoons raw apple cider vinegar
  • 2 Tablespoons whey or sauerkraut juice, kombucha or other starter culture

Instructions

  • Use a large bowl and have a spatula or large spoon ready to mix the ingredients. You can also use a mixer if you prefer.
  • Add all the ingredients into your bowl, one by one, then mix with the spatula until well incorporated.
  • Add water a little bit at a time, if needed, to reach the correct consistency. Just aim for what you know ketchup consistency to be. It should be slightly liquid and look less like a paste.
  • Taste and adjust seasonings to your preference.
  • Add ketchup to a clean Mason jar and fill to the top of the jar.
  • Use a clean cloth to wipe the rim of the jar.
  • Place a canning lid and band on top and screw it on, but not completely tight. You want some of the air to escape in the fermenting process. 
  • Let it sit on the counter for 6 to 10 hours, then put it in the refrigerator.
  • Let it chill; then, it will be perfectly suitable to use as regular ketchup.

Notes

  • You can add spices such as ground or raw ginger, powdered or fresh garlic, and pepper.
  • This recipe can be doubled or cut in half.

Nutrition

Serving: 1tablespoon | Calories: 20kcal | Carbohydrates: 5g | Protein: 1g | Fat: 0.1g | Saturated Fat: 0.01g | Polyunsaturated Fat: 0.02g | Monounsaturated Fat: 0.01g | Sodium: 177mg | Potassium: 136mg | Fiber: 1g | Sugar: 4g | Vitamin A: 188IU | Vitamin C: 3mg | Calcium: 9mg | Iron: 0.4mg
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