Name: Tomato and Cucumber Salad
Ingredients: 1 head of lettuce; 4 medium-sized tomatoes; 2 cucumbers; Salt to taste; Pepper to taste; Preferred dressing; Chopped parsley for garnish

Why it works: Lettuce and cucumber match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,409 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Tomato and Cucumber Salad

Ingredients

Directions

Separate the lettuce leaves and arrange them in a salad dish.
Peel the tomatoes, slice them thinly, and place them on the lettuce.
Sprinkle with salt and pepper.
Peel and slice one cucumber, arranging the slices in a pyramid on the tomatoes.
Peel the second cucumber and lay thin slices around the edge of the tomatoes for garnish.
Sprinkle with salt and pepper, then pour your preferred dressing over the salad.
Scatter chopped parsley on top.

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.

Lettuce + cucumbertop 1% of all pairs

Smell alikestrong

Cooked together1,409 recipes

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

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Tomato + cucumbertop 4% of all pairs

Smell alikemoderate

Cooked together2,405 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Lettuce + parsleytop 5% of all pairs

Smell alikestrong

Cooked together1,483 recipes

Shared aroma: trans-2-hexenal (green, leafy).
Lettuce + tomatotop 6% of all pairs

Smell alikemoderate

Cooked together1,655 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

Tomatoes: Provide the juicy, acidic body of the salad and its main fresh flavour.
Cucumbers: Add cool, crisp texture and a mild, watery freshness to the salad.
Lettuce: Forms the crisp leafy base that holds the tomatoes and cucumber.

Swap the tomato

How well each one fits the dish's main ingredients (lettuce, cucumber, pepper, parsley):

Beetrootfits better
Spinachfits better
Chivefits better
Tomatothe original

Fit is the average pairing score against lettuce, cucumber, pepper, parsley. 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.