Why it works: Lemon and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Mushrooms on Toast
Ingredients
Directions
Prepare the mushrooms
Wash, stem, and skin the mushrooms, then cut them into dice.
In a saucepan, combine the mushrooms, lemon juice, butter, onion slice, parsley sprig, and clove bag.
Set the saucepan over low heat and stew gently until nearly dry.
Make the mushroom mixture
Add water to cover the mushrooms, season with salt and pepper, and cook for 15 minutes.
Remove the bag of onion and herbs, then thicken the mixture with the beaten egg yolk and cream.
Serve on toast
Prepare buttered toast on a platter, moisten with hot milk, and pour the mushroom mixture over it.
Garnish with parsley and serve hot.
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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Lemon + parsleytop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Parsley + clovetop 6% of all pairsSmell alikestrongCooked together6,768 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mushrooms
- Form the main body of the dish and release moisture that is then cooked down.
- Egg yolk
- Thickens the mixture as it heats, giving it a creamy, coating texture.
- Cream
- Adds richness and body, helping the mushroom mixture become smooth and thick.
- Butter
- Adds fat and flavour to the mushrooms and enriches the buttered toast.
- Bread
- Provides a crisp, absorbent base that soaks up the hot milk and mushroom mixture.
The step that matters
Thickening with egg yolk and cream. Egg yolk sets when heated, but if the mixture gets too hot or boils after adding it, the yolk can scramble and turn grainy. Keep the heat low and stir steadily.
Swap the onion
How well each one fits the dish's main ingredients (mushroom, lemon, butter, parsley, clove, pepper, egg):
- Shallotfits better
- Spinachfits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against mushroom, lemon, butter, parsley, clove, pepper, egg. 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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