Name: Egg Salad
Ingredients: 6 hard boiled eggs; 1 head of lettuce; 3 tomatoes; oil; vinegar; pepper; coarse sea salt

Why it works: Lettuce and tomato are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 1,655 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Egg Salad

Ingredients

Directions

Prepare

Make a bed of shredded lettuce and toss it in oil and vinegar.
Dice the tomatoes and sprinkle them with pepper, salt, oil, and vinegar.

Assemble

Pile the diced tomatoes in the center of the dish.
Cut the hard boiled eggs into quarters and arrange them around the tomatoes.

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 + tomatotop 6% of all pairs

Smell alikemoderate

Cooked together1,655 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Tomato + peppertop 7% of all pairs

Smell alikemoderate

Cooked together17,923 recipes

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

Smell alikemoderate

Cooked together4,037 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Vinegar + peppertop 14% of all pairs

Smell alikemoderate

Cooked together27,814 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Lettuce + vinegartop 14% of all pairs

Smell alikemoderate

Cooked together2,370 recipes

Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Hard boiled eggs: Provide the main protein and creamy richness of the salad.
Lettuce: Forms the crisp, fresh base that holds the other ingredients.
Tomatoes: Add juiciness and acidity that brighten the dish.
Oil: Adds fat and smooth mouthfeel to the dressing and greens.
Vinegar: Adds sharp acidity that balances the richness of the eggs and oil.