Name: Young Potatoes
Ingredients: young potatoes; juice of 1 lemon; butter; 2 teaspoons flour; milk or stock; 1 egg yolk; salt; pepper

Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Young Potatoes

Ingredients

Directions

Wash and peel the young potatoes.
Boil them quickly in a little water with the lemon juice.
Drain the potatoes and place them in a saucepan with butter and flour.
Moisten with milk or stock and thicken with the beaten egg yolk.
Season to taste and serve hot.

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.

Lemon + peppertop 3% of all pairs

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Butter + milktop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Potato + peppertop 9% of all pairs

Smell alikemoderate

Cooked together8,305 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Potato + milktop 9% of all pairs

Smell alikemoderate

Cooked together3,611 recipes

Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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

Swap the potato

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

Asparagusfits about as well
Shallotfits about as well
Capsicumfits about as well
Potatothe original

Fit is the average pairing score against lemon, butter, flour, milk, egg, pepper. Candidates are from the same food group and used in at least 100 recipes.