Name: Mushroom and Eggs
Ingredients: 4 hard-boiled eggs; 1 lb mushrooms; 2 teaspoons chopped parsley; 1 oz butter; pepper to taste; coarse sea salt to taste; slices of toast for serving

Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Mushroom and Eggs

Ingredients

Directions

Cook the mushrooms

Stew the mushrooms in the butter and season well with pepper and salt.

Combine and serve

Chop the hard-boiled eggs and mix them with the mushrooms and parsley.
Heat the mixture thoroughly.
Serve on slices of toast.

Recipe from a historical cookbook (Internet Archive).

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.

Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Mushroom + buttertop 7% of all pairs

Smell alikemoderate

Cooked together12,525 recipes

Shared aroma: trans-2-decenal (waxy, orange).
Mushroom + peppertop 11% of all pairs

Smell alikemoderate

Cooked together13,580 recipes

Shared aroma: 2-nonenal (fatty, green).
Mushroom + parsleytop 11% of all pairs

Smell alikemoderate

Cooked together6,132 recipes

Shared aroma: 2,4-decadienal (seaweed).
Parsley + buttertop 15% of all pairs

Smell alikemoderate

Cooked together28,563 recipes

Shared aroma: trans-2-hexenal (green, leafy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Mushrooms: Form the savory, earthy bulk of the filling and absorb the butter and seasoning.
Hard-boiled eggs: Add richness and a soft, crumbly texture to the filling.
Butter: Adds fat and flavor, and helps the mushrooms brown as they cook.

The step that matters

Stewing the mushrooms. Mushrooms release a lot of water as they cook. Cooking that moisture off lets the mushrooms brown and concentrates their flavor, so the filling does not turn soggy or bland.

Swap the parsley

How well each one fits the dish's main ingredients (egg, mushroom, butter, pepper):

Parsleythe original
Thymefits about as well
Nutmegfits less well
Tarragonfits less well

Fit is the average pairing score against egg, 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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Mushroom and Eggs