Why it works: Mustard and horseradish 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 ↓
To Pickle Lemons with the Peel on
Ingredients
Directions
Prepare the lemons
Prepare a brine that will float an egg and soak the lemons in it for 6 days, stirring daily.
Boil the lemons in 2 quarts of boiling water for 15 minutes.
Remove the lemons and let them dry completely in a cloth.
Pickle and store
Boil enough vinegar to cover the lemons with all the spices listed.
Pack the lemons in a jar and pour the hot vinegar over them.
Seal the jar tightly and store for about 12 months before using.
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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Mustard + horseradishtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Clove + gingertop 1% of all pairsSmell alikestrongCooked together6,038 recipes
Shared aroma: estragole (anise, licorice).
-
Lemon + gingertop 5% of all pairsSmell alikestrongCooked together5,154 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Clove + macetop 6% of all pairsSmell alikelowCooked together8,400 recipes
Shared aroma: methyleugenol (clove, spice).
-
Clove + horseradishtop 7% of all pairsSmell alikestrongCooked together1,245 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lemons
- Provide the main fruit, whose flesh and peel soften and absorb the pickling flavours.
- Vinegar
- Acts as the pickling liquid, adding acidity that preserves the lemons and sharpens their flavour.
- Cloves
- Add warm, aromatic spice flavour to the pickling vinegar.
- Mustard seed
- Contributes a pungent, sharp aroma that develops as the lemons mature in the vinegar.
The step that matters
Drying the lemons completely after boiling. Any water left on the lemons dilutes the hot vinegar and can encourage spoilage during long storage, so they must be fully dry before packing.
Swap the white pepper
How well each one fits the dish's main ingredients (lemon, vinegar, clove, ginger, mace, mustard, horseradish):
- Allspicefits better
- Cinnamonfits better
- Turmericfits better
- White pepperthe original
Fit is the average pairing score against lemon, vinegar, clove, ginger, mace, mustard, 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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