Why it works: Nutmeg and clove match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,686 recipes. Both carry estragole, which smells anise, licorice. The science ↓
Walnut Catsup
Ingredients
Directions
Prepare the walnuts
Pound the walnuts in a mortar, adding the salt as you go.
Pour in the vinegar and let the mixture sit until the walnuts turn black, stirring 3–4 times a day.
Make the ketchup
Add the strong beer and boil the mixture for 10 minutes.
Strain the mixture and let it sit overnight to settle.
Pour off the clear liquid from the sediment.
Add the bruised garlic, nutmeg, cloves, black pepper, and mace.
Boil the mixture for 30 minutes.
Bottle and cork the catsup well the next day.
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.
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Nutmeg + clovetop 1% of all pairsSmell alikestrongCooked together8,686 recipes
Shared aroma: estragole (anise, licorice).
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Nutmeg + macetop 4% of all pairsSmell alikemoderateCooked together6,557 recipes
Shared aroma: myristicin (spice, warm).
-
Walnut + nutmegtop 5% of all pairsSmell alikestrongCooked together1,230 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Clove + macetop 6% of all pairsSmell alikelowCooked together8,400 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Walnuts
- Provide the main flavour and dark colour as they steep in vinegar.
- Vinegar
- Acidity that extracts flavour from the walnuts and helps preserve the ketchup.
- Strong old beer
- Adds malty depth and body to the liquid before boiling.
- Garlic
- Adds pungent aroma and savoury flavour to the finished ketchup.
The step that matters
Letting the walnuts turn black in the vinegar. The walnuts need time and regular stirring to darken and release their flavour evenly. Stopping early leaves the ketchup pale and under-flavoured.
Swap the mace
How well each one fits the dish's main ingredients (walnut, vinegar, beer, garlic, nutmeg, clove, pepper):
- Allspicefits better
- Cinnamonfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against walnut, vinegar, beer, garlic, nutmeg, clove, pepper. 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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