Name: Aspic of Fillets of Trout
Ingredients: 12 fillets of trout; butter; seasonings; aspic; mayonnaise jelly; parsley; hard-boiled eggs; anchovies; capers

Why it works: Parsley and capers match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,550 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Aspic of Fillets of Trout

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Preheat the oven to 350°F (175°C).
Lightly bake the trout fillets in a covered pan with butter and seasonings.
Cool the fillets with a light weight on top to flatten them.
Cut out rounds from the cooled fillets, about the size of a silver dollar.
Line a mold with a coating of aspic.
Arrange the fillet rounds in the mold, adding parsley, eggs, anchovies, and capers in decorative patterns.
Fill the center with more fillets mixed with mayonnaise jelly.
Chill until set, then turn out onto a lace paper-covered dish.

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.

Parsley + caperstop 1% of all pairs

Smell alikestrong

Cooked together1,550 recipes

Shared aroma: coumarin (sweet, hay).
Butter + parsleytop 15% of all pairs

Smell alikemoderate

Cooked together28,563 recipes

Shared aroma: trans-2-hexenal (green, leafy).
Butter + caperstop 16% of all pairs

Smell alikemoderate

Cooked together1,637 recipes

Shared aroma: isobutyraldehyde (malty, green).
Butter + eggtop 17% of all pairs

Smell alikemoderate

Cooked together118,967 recipes

Shared aroma: decanal (soap, orange peel).
Parsley + eggtop 21% of all pairs

Smell alikemoderate

Cooked together18,765 recipes

Shared aroma: 2,4-decadienal (seaweed).