Name: Deviled Eggs
Ingredients: 6 hard-boiled eggs; 1 teaspoon mustard; 1 teaspoon vinegar; salt to taste; pepper to taste

Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Deviled Eggs

Ingredients

Directions

Cut the hard-boiled eggs in half lengthwise and remove the yolks.
Mash the yolks finely, then mix in mustard, vinegar, salt, and pepper.
Roll the mixture into small balls and place them in the cavity of each egg half.

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.

Mustard + vinegartop 7% of all pairs

Smell alikemoderate

Cooked together14,067 recipes

Shared aroma: isobutyraldehyde (malty, green).
Mustard + peppertop 9% of all pairs

Smell alikemoderate

Cooked together15,430 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).
Egg + mustardtop 28% of all pairs

Smell alikemoderate

Cooked together9,210 recipes

Shared aroma: (e)-2-octenal (fatty, green).
Egg + vinegartop 33% of all pairs

Smell alikelow

Cooked together12,922 recipes

Shared aroma: acetic acid (sour, vinegar).

Egg and vinegar barely smell alike, yet cooks put them together in 12,922 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

What each ingredient does

Egg yolks: Form the creamy base that gives the filling its body and richness.
Mustard: Adds sharp, pungent flavor that cuts the richness of the yolks.
Vinegar: Adds acidity that brightens the flavor of the rich yolk filling.