Why it works: Mushroom and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Mushrooms in Shells
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the filling
Cut fresh mushrooms into small pieces and dry them with a napkin.
Toss the mushrooms in hot butter in a saucepan until browned but not fully cooked.
Shake in 1 teaspoon of flour and stir.
Add 1 cup of rich veal or chicken stock and let simmer for 5 minutes.
Beat 2 eggs with the juice of ½ lemon and add slowly, stirring until thickened like cream.
Bake and serve
Fill tart shells with the mixture, sprinkle with cracker crumbs, and brown in a hot oven at 400°F (200°C).
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.
-
Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mushroom + vealtop 14% of all pairsSmell alikemoderateCooked together2,446 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
-
Mushroom + lemontop 15% of all pairsSmell alikemoderateCooked together4,633 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mushrooms
- Provide the main body and savory flavor of the filling.
- Butter
- Browns the mushrooms and carries their flavor through the filling.
- Flour
- Thickens the stock so the filling holds together.
- Veal or chicken stock
- Adds liquid and savory depth to the filling.
- Eggs
- Set with gentle heat to give the filling a creamy, thickened body.
- Cracker crumbs
- Form a crisp, browned topping over the filling.
The step that matters
Adding the egg and lemon mixture. Eggs thicken when heated but can curdle if they get too hot or are added too fast. Adding them slowly while stirring keeps the filling smooth and creamy.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Lemon Sauce236 recipes
Mushroom Soup60 recipes
Veal Patties50 recipes
Beef, Mutton, or Veal Broth6 recipes