Name: Cucumber and Cheese Sandwiches
Ingredients: 2 medium cucumbers; 2 hard cooked eggs; cheese; Salt and pepper to taste; buttered bread; Optional: 1 onion or a few celery seeds

Why it works: Cheese and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,130 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Cucumber and Cheese Sandwiches

Ingredients

Directions

Grind the cucumbers and hard cooked eggs together.
Combine the mixture with cheese and mix until well creamed.
Add salt and pepper to taste and mix again.
Spread the mixture on buttered bread.
If desired, add ground onion or a few celery seeds to the mixture.

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.

Cheese + breadtop 7% of all pairs

Smell alikemoderate

Cooked together2,130 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Cucumber + oniontop 8% of all pairs

Smell alikestrong

Cooked together6,050 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Pepper + oniontop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Cucumber + peppertop 12% of all pairs

Smell alikemoderate

Cooked together5,991 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Egg + breadtop 13% of all pairs

Smell alikemoderate

Cooked together22,662 recipes

Shared aroma: (e)-2-octenal (fatty, green).

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

Swap the onion

The recipe marks onion as optional. How well each one fits the dish's main ingredients (cucumber, egg, cheese, pepper, bread):

Capsicumfits better
Tomatofits better
Asparagusfits better
Onionthe original

Fit is the average pairing score against cucumber, egg, cheese, pepper, bread. Candidates are from the same food group and used in at least 100 recipes.