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, Another Way
Ingredients
Directions
Draw the liquid
Place the mushrooms in a stewpan.
Sprinkle the mushrooms with salt.
Set the stewpan over low heat to allow the mushrooms to release their liquid.
Strain the liquid.
Season and boil
Return the liquid to the heat.
Add shallots, garlic, pepper, ginger, mace, cloves, and bay leaves.
Boil slowly.
Skim off any foam.
Bottle and mature
Allow the mixture to cool.
Bottle and cork the mixture tightly.
After two months, boil it again with fresh spices and horseradish.
Store in a cool place; it will keep for a year.
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.
-
Shallot + horseradishtop 1% of all pairsSmell alikestrongCooked together376 recipes
Shared aroma: coumarin (sweet, hay).
-
Clove + gingertop 1% of all pairsSmell alikestrongCooked together6,038 recipes
Shared aroma: estragole (anise, licorice).
-
Mushroom + shallottop 4% of all pairsSmell alikemoderateCooked together1,982 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Shallot + garlictop 4% of all pairsSmell alikestrongCooked together2,000 recipes
Shared aroma: coumarin (sweet, hay).
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked 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 their liquid under salt, forming the base of the ketchup.
- Coarse sea salt
- Draws liquid out of the mushrooms and helps preserve the mixture.
- Shallots
- Add savory depth and aromatic flavor to the liquid as it simmers.
- Garlic
- Adds pungent aroma and savory depth to the simmered liquid.
The step that matters
Boiling slowly and skimming foam. Gentle simmering extracts flavor without scorching, and skimming removes foam from proteins and impurities so the ketchup stays clear and clean-tasting for long storage.
Swap the mace
How well each one fits the dish's main ingredients (mushroom, shallot, clove, garlic, pepper, ginger, horseradish):
- Turmericfits better
- Thymefits better
- Allspicefits better
- 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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