Why it works: Horseradish and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,832 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Lemon Pickle
Ingredients
Directions
Prepare the lemons
Grate the yellow rind from the lemons and quarter them, leaving the quarters whole at the bottom.
Sprinkle salt on the lemons and place them in the sun daily until dry.
Brush off the salt and place the lemons in a pot with nutmeg, mace, horseradish, garlic, and mustard seed.
Pickle and bottle
Pour the strong vinegar over the mixture, tie the pot closed, and place a board on top.
Let it stand for three months, then strain it and bottle when perfectly clear.
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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Horseradish + mustardtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Nutmeg + clovetop 1% of all pairsSmell alikestrongCooked together8,686 recipes
Shared aroma: estragole (anise, licorice).
-
Nutmeg + macetop 4% of all pairsSmell alikemoderateCooked together6,557 recipes
Shared aroma: myristicin (spice, warm).
-
Horseradish + garlictop 5% of all pairsSmell alikestrongCooked together719 recipes
Shared aroma: coumarin (sweet, hay).
-
Lemon + nutmegtop 5% of all pairsSmell alikestrongCooked together11,318 recipes
Shared aroma: beta-phellandrene (minty, terpene).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fresh lemons
- Provide the main fruit body and acidic juice that flavours the pickle.
- Coarse sea salt
- Draws moisture out of the lemons so they dry and firm before pickling.
- Strong vinegar
- Acts as the preserving liquid that keeps the lemons from spoiling during the long standing.
- Garlic
- Adds pungent aroma that mellows during the long standing period.
- Mustard seed
- Contributes a sharp, pungent flavour to the pickling liquid.
The step that matters
Drying the lemons in salt in the sun. Salt draws water out of the lemon flesh and rind, concentrating flavour and reducing moisture that could cause spoilage. Drying until the lemons are truly dry is what makes the later vinegar preservation reliable.
Swap the mace
How well each one fits the dish's main ingredients (lemon, nutmeg, horseradish, clove, garlic, mustard, vinegar):
- Allspicefits better
- Tarragonfits better
- Capersfits better
- Macethe original
Fit is the average pairing score against lemon, nutmeg, horseradish, clove, garlic, 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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