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Tomato Catsup

A thick tomato sauce seasoned with ginger, cloves, cinnamon, red pepper, salt, mustard, vinegar, and onions.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Clove and cinnamon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,189 recipes. Both carry ethyl cinnamate, which smells sweet, balsamic. The science ↓

Tomato Catsup

Ingredients

Directions

Prepare the tomatoes

  1. Peel, stew, and strain the tomatoes.

  2. Add ginger, cloves, cinnamon, red pepper, salt, mustard, vinegar, and onions.

Simmer

  1. Simmer slowly for 3 to 4 hours.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

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. Clove + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together14,189 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  2. Ginger + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together6,380 recipes

    Shared aroma: estragole (anise, licorice).

  3. Ginger + clovetop 1% of all pairs
    Smell alikestrong
    Cooked together6,038 recipes

    Shared aroma: estragole (anise, licorice).

  4. Clove + peppertop 5% of all pairs
    Smell alikestrong
    Cooked together17,451 recipes

    Shared aroma: ethyl octanoate (fruity, wine).

  5. Mustard + oniontop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

What each ingredient does

Tomatoes
Provide the main body, colour and flavour of the sauce.
Vinegar
Adds sharp acidity that balances the sweetness of the cooked tomatoes.
Onions
Add savoury aroma and body as they soften into the sauce.
Cloves
Add a warm, aromatic spice flavour.
Cinnamon
Adds warm, sweet aroma that rounds out the sauce.

The step that matters

Simmering slowly. A long, gentle simmer lets water evaporate so the sauce thickens and the flavours blend. Heat that is too high can scorch the sugars and tomato solids on the bottom of the pan.

Swap the onion

How well each one fits the dish's main ingredients (tomato, ginger, clove, cinnamon, pepper, mustard, vinegar):

  1. Capsicumfits better
  2. Horseradishfits better
  3. Lettucefits better
  4. Onionthe original

Fit is the average pairing score against tomato, ginger, clove, cinnamon, pepper, mustard, vinegar. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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