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 ↓
Green Parsley
Ingredients
Directions
Prepare the parsley
Pick the parsley and gather sprigs.
Soak the parsley in a saltwater solution strong enough to float an egg for one week.
Drain the parsley and soak it in a fresh saltwater solution for another week.
Drain again and soak in cold water for 48 hours, changing the water three times a day.
Scald the parsley until it turns green, then dry it well between cloths.
Make the pickle
In a pot, combine vinegar, mace, nutmeg, shallots, and horseradish; boil for 12 minutes and skim the liquid.
Place the parsley in jars and pour the cooled pickle over it, then seal tightly.
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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Shallot + horseradishtop 1% of all pairsSmell alikestrongCooked together376 recipes
Shared aroma: coumarin (sweet, hay).
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Parsley + shallottop 1% of all pairsSmell alikestrongCooked together3,737 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Parsley + nutmegtop 3% of all pairsSmell alikestrongCooked together5,062 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Mace + nutmegtop 4% of all pairsSmell alikemoderateCooked together6,557 recipes
Shared aroma: myristicin (spice, warm).
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Nutmeg + shallottop 5% of all pairsSmell alikestrongCooked together1,019 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Parsley
- Is the vegetable being preserved, so its texture and green color are the focus of the process.
- Coarse sea salt
- Draws water out of the parsley and seasons it during the repeated saltwater soaks.
- White wine vinegar
- Provides the acidity that preserves the parsley and gives the pickle its sharp flavor.
- Shallots
- Add mild onion-like aroma and sweetness to the pickling liquid as it boils.
- Horseradish
- Adds sharp, pungent heat that infuses into the pickling liquid.
The step that matters
Drying the parsley before jarring. Any water left on the parsley dilutes the vinegar and can encourage spoilage, so the sprigs should be dried thoroughly between cloths before they go into the jars with the pickle.
Swap the mace
How well each one fits the dish's main ingredients (parsley, white wine, vinegar, nutmeg, shallot, horseradish):
- Tarragonfits better
- Capersfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against parsley, white wine, vinegar, nutmeg, shallot, 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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