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Sauce

Mushroom Ketchup

A preserved mushroom condiment made by boiling mushrooms with seasonings and storing for up to a year.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 11 ingredients
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Why it works: Shallot and horseradish match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 376 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Mushroom Ketchup

Ingredients

Directions

Extract the liquid

  1. Place the mushrooms in a stew-pan and sprinkle with salt.

  2. Set over a slow fire until they produce liquid, then strain the liquid.

Season and boil

  1. Add shallots, garlic, pepper, ginger, mace, cloves, and bay leaves to the liquid, then boil the liquid and skim it.

Preserve

  1. Let it cool and cork tightly.

  2. Boil again with fresh spice and horseradish to preserve for a year.

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. Shallot + horseradishtop 1% of all pairs
    Smell alikestrong
    Cooked together376 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Clove + gingertop 1% of all pairs
    Smell alikestrong
    Cooked together6,038 recipes

    Shared aroma: estragole (anise, licorice).

  3. Mushroom + shallottop 4% of all pairs
    Smell alikemoderate
    Cooked together1,982 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  4. Shallot + garlictop 4% of all pairs
    Smell alikestrong
    Cooked together2,000 recipes

    Shared aroma: coumarin (sweet, hay).

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

    Shared aroma: ethyl octanoate (fruity, wine).

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

What each ingredient does

Mushrooms
Release the liquid that becomes the base of the ketchup.
Shallots
Add savory depth and aroma to the liquid.
Garlic
Adds pungent aroma that mellows during boiling.
Sea salt
Draws liquid out of the mushrooms and seasons the ketchup.

The step that matters

Setting the mushrooms over a slow fire. A slow heat lets the mushrooms release their liquid gradually, so it is extracted without scorching. High heat can burn the mushrooms before enough liquid forms, leaving a bitter, dark flavour.

Swap the mace

How well each one fits the dish's main ingredients (mushroom, shallot, clove, garlic, pepper, ginger, horseradish):

  1. Turmericfits better
  2. Thymefits better
  3. Allspicefits better
  4. Macethe original

Fit is the average pairing score against mushroom, shallot, clove, garlic, pepper, ginger, horseradish. 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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