Name: Cucumber, Onion and Cheese Sandwiches
Ingredients: 1 package Neufchatel cheese; 1 medium cucumber; 1 walnut-sized onion; a dash of cayenne pepper; 4 teaspoons paprika; 2 tablespoons mayonnaise; ½ teaspoon salt; thin slices of rye or white bread, buttered

Why it works: Cucumber and walnut match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 380 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Cucumber, Onion and Cheese Sandwiches

Ingredients

Directions

Prepare the filling

Chop the cucumber and onion together.
Add the Neufchatel cheese and mix well.
Stir in the cayenne pepper, paprika, mayonnaise, and salt.

Assemble

Spread the mixture on thin slices of buttered rye or white bread.

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.

Cucumber + walnuttop 6% of all pairs

Smell alikestrong

Cooked together380 recipes

Shared aroma: 2-nonenal (fatty, green).
Cucumber + oniontop 8% of all pairs

Smell alikestrong

Cooked together6,050 recipes

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

Smell alikestrong

Cooked together31 recipes

Shared aroma: coumarin (sweet, hay).
Onion + peppertop 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).

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

What each ingredient does

Neufchatel cheese: Provides a creamy, spreadable base that holds the filling together.
Cucumber: Adds moisture and a cool, crisp texture to the filling.
Onion: Adds sharp, aromatic flavor that balances the rich cheese.
Mayonnaise: Adds fat and moisture, keeping the spread smooth and rich.

Swap the onion

How well each one fits the dish's main ingredients (cheese, cucumber, walnut, pepper, rye):

Lettucefits better
Mustardfits better
Beetrootfits better
Onionthe original

Fit is the average pairing score against cheese, cucumber, walnut, pepper, rye. 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.