Name: Omelet of Mushroom or Potato
Ingredients: 6 eggs; ½ cup milk; Salt, to taste; Pepper, to taste; Butter, for frying; Finely chopped scalded mushrooms or hot-cooked potatoes, as desired

Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Omelet of Mushroom or Potato

Ingredients

Directions

Make the batter

Beat the eggs until light, with the whites stiff and yolks smooth.
Add milk, salt, and pepper to the yolks, then gently fold in the egg whites.

Cook and serve

Heat a good amount of butter in a frying pan until it sizzles.
Pour the egg mixture into the pan and cook over medium heat without stirring.
As the eggs set, use a broad-bladed knife to lift the edges to prevent burning.
When the center is set, fold the omelet over the mushrooms or potatoes.
Invert the omelet onto a hot dish to serve, with the browned side up.

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.

Milk + buttertop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + mushroomtop 7% of all pairs

Smell alikemoderate

Cooked together12,525 recipes

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

Smell alikemoderate

Cooked together13,580 recipes

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

Smell alikemoderate

Cooked together2,231 recipes

Shared aroma: 1-hexanal (fruit).
Egg + buttertop 17% of all pairs

Smell alikemoderate

Cooked together118,967 recipes

Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Eggs: Whites trap air for lift while yolks provide richness and structure as the omelet sets.
Milk: Adds moisture and tenderness, keeping the cooked eggs soft rather than dry.
Butter: Conducts heat for frying and gives the omelet its golden browning and rich flavor.

The step that matters

Cook without stirring, lifting only the edges. Egg proteins set as they heat. Stirring breaks up forming curds, while lifting the edges lets uncooked egg flow beneath and keeps the surface from burning before the center sets.

“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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Omelet of Mushroom or Potato