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How to Make Homemade Ketchup

Learn how to make homemade ketchup with tomato paste, vinegar, sweetener, spices, simmering, storage, common mistakes, troubleshooting, and FAQs.

Food & CookingEdited by Pramod Tiwari
2 min read

Quick Answer

To make homemade ketchup, whisk tomato paste with vinegar, water, sweetener, salt, and spices, simmer until smooth and thick, adjust the sweet-tangy balance, cool, and refrigerate in a clean covered jar.

Ingredients and Tools

  • Tomato paste
  • Vinegar
  • Water
  • Sugar or honey
  • Salt
  • Garlic powder and onion powder
  • Saucepan
  • Whisk
  • Clean jar

Safety Precautions

  • Refrigerate homemade ketchup unless using a tested canning recipe.
  • Use clean jars and utensils.
  • Simmer gently to prevent splatter.
  • Check allergy-sensitive spices and sweeteners.
  • Discard if mold, gas, or off smells appear.

Step-by-Step Instructions

  1. Step 1

    Combine the base

    Whisk tomato paste, vinegar, water, sweetener, and salt in a saucepan.

  2. Step 2

    Add spices

    Stir in garlic powder, onion powder, paprika, or a pinch of cloves if desired.

  3. Step 3

    Simmer

    Cook over low heat until smooth and slightly thickened.

  4. Step 4

    Blend if needed

    Use a blender for an extra-smooth texture if using fresh onions or garlic.

  5. Step 5

    Adjust flavor

    Add vinegar for tang, sweetener for mellow flavor, or salt for clarity.

  6. Step 6

    Cool

    Let the ketchup cool before jarring.

  7. Step 7

    Refrigerate

    Store covered in the refrigerator and label the date.

Practical Example

Example: You simmer tomato paste, apple cider vinegar, water, brown sugar, salt, garlic powder, and paprika for a quick burger sauce.

Common Mistakes

  • Skipping vinegar
  • Using too much spice
  • Cooking on high heat
  • Not thinning tomato paste
  • Assuming it is shelf-stable
  • Jarring while very hot in unsafe glass

Troubleshooting

Ketchup is too thick

Whisk in water a spoonful at a time.

Ketchup is too sharp

Add a little sweetener or more tomato paste.

Texture is gritty

Simmer longer and blend if needed.

Flavor is bland

Add salt gradually and let it chill before final tasting.

FAQs

Can I make ketchup from fresh tomatoes?

Yes, but it takes longer because you need to cook down and strain the tomatoes.

How long does homemade ketchup last?

Keep it refrigerated and use it while fresh; use tested canning instructions for long storage.

Can I reduce the sugar?

Yes, but the flavor will be sharper and less like classic ketchup.

Is homemade ketchup safe for pantry storage?

Only if made and processed with a tested canning recipe.

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