Name: Mushrooms on Toast
Ingredients: 1 pint mushrooms; 2 ounces butter; 2 teaspoons flour; 1 teaspoon salt; ¼ teaspoon white pepper; 1 blade mace, powdered; ½ teaspoon grated lemon; 1 slice bread

Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Mushrooms on Toast

Ingredients

Directions

Prepare the mushrooms

Combine mushrooms, butter, flour, salt, white pepper, powdered mace, and grated lemon in a stew-pan.
Stew until the butter is absorbed.
Add enough white roux to moisten the mushrooms.

Toast and serve

Fry the slice of bread in butter until golden.
Serve the tender mushrooms on the 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.

Butter + breadtop 7% of all pairs

Smell alikemoderate

Cooked together27,232 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Mushroom + buttertop 7% of all pairs

Smell alikemoderate

Cooked together12,525 recipes

Shared aroma: trans-2-decenal (waxy, orange).
White pepper + macetop 9% of all pairs

Smell alikemoderate

Cooked together1,695 recipes

Shared aroma: myrcene (balsamic, herbaceous).
Mushroom + breadtop 10% of all pairs

Smell alikemoderate

Cooked together2,536 recipes

Shared aroma: 2-nonenal (fatty, green).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 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: Form the main body of the dish and soften as they stew in the butter.
Butter: Carries flavour and fat, enriching the mushrooms and browning the bread.
Flour: Thickens the butter and juices into a light coating that moistens the mushrooms.

Swap the white pepper

How well each one fits the dish's main ingredients (mushroom, butter, flour, mace, lemon, bread):

Nutmegfits better
Marjoramfits better
Thymefits better
White pepperthe original

Fit is the average pairing score against mushroom, butter, flour, mace, lemon, bread. 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.