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How to Make Homemade Ketchup

See how to make your own ketchup from scratch.

By allrecipes · From Open Recipes · 11 ingredients
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How to Make Homemade Ketchup

Why it works: Onion and garlic match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 29,058 recipes. Both carry furaneol, which smells caramel, strawberry. The science ↓

How to Make Homemade Ketchup

3 cups
Prep10 min
Cook12 hr

Ingredients

Directions

Step-by-step directions aren't available for this recipe. See the full recipe at the source →

Nutrition, whole recipe (rough)

144Calories
3 gProtein
1 gFat
33 gCarbs

Counts 10 of 11 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 10 portions
IngredientPortion assumedkcal
Sugar1 tbsp (12.5g) granulated49
Onion1 medium (110g)44
Tomato1 medium (123g)22
Clove1 tsp ground (2g)7
Celery1 stalk (40g)6
Black Pepper1 tsp ground (2.3g)6
Garlic1 clove (3g)4
Vinegar1 tbsp (15ml) distilled3
Mustard1 tsp (5g) yellow3
Salt1 tsp (6g)0
Waternot in our table0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By allrecipes. Recipe from Open Recipes.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Onion + garlictop 1% of all pairs
    Smell alikestrong
    Cooked together29,058 recipes

    Shared aroma: furaneol (caramel, strawberry).

  2. Celery + mustardtop 2% of all pairs
    Smell alikemoderate
    Cooked together4,169 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Tomato + garlictop 3% of all pairs
    Smell alikemoderate
    Cooked together14,076 recipes

    Shared aroma: furaneol (caramel, strawberry).

  4. Tomato + celerytop 4% of all pairs
    Smell alikemoderate
    Cooked together3,377 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  5. Celery + peppertop 5% of all pairs
    Smell alikestrong
    Cooked together16,012 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

Swap the tomato

How well each one fits the dish's main ingredients (sugar, vinegar, onion, garlic, celery, mustard, pepper):

  1. Horseradishfits better
  2. Broccolifits better
  3. Chivefits better
  4. Tomatothe original

Fit is the average pairing score against sugar, vinegar, onion, garlic, celery, mustard, pepper. Candidates are from the same food group and used in at least 100 recipes.