Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Mushrooms, to Preserve
Ingredients
Directions
Prepare
Peel the mushrooms and soak them in cold water with a little lemon juice for 10 minutes.
Carefully dry the mushrooms with a cloth.
Cook
Melt the butter in a stewpan, then add the mushrooms, lemon juice, pepper, and salt.
Cook over low heat until the liquid evaporates and the mushrooms are dry, stirring to prevent sticking.
Preserve and serve
Transfer the mushrooms to pots and pour clarified butter over the top.
If not using immediately, they can be stored uncovered for a few days.
To rewarm, place the mushrooms in a stewpan and strain the butter before serving.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Mushroom + lemontop 15% of all pairsSmell alikemoderateCooked together4,633 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mushrooms
- Form the dish; cooking drives off their liquid so they become dry and concentrated.
- Butter
- Carries the mushrooms and adds richness, and the clarified butter layer seals them for storage.
- Lemon juice
- Adds acidity that brightens the flavour and helps keep the mushrooms pale during soaking.
The step that matters
Cook over low heat until the liquid evaporates. Mushrooms release a lot of water. Cooking gently over low heat lets that moisture evaporate slowly, so the mushrooms dry out and concentrate in flavour. Stirring prevents scorching and sticking to the stewpan.
Swap the lemon
How well each one fits the dish's main ingredients (mushroom, butter, pepper):
- Lemonthe original
- Plumfits about as well
- Mangofits less well
- Cherryfits less well
Fit is the average pairing score against mushroom, butter, 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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