Name: Liver Sauce for Fish
Ingredients: Liver of the fish; 1 tablespoon flour; Broth or melted butter; Parsley; Cayenne pepper; Essence of anchovy or soy sauce or ketchup; Lemon juice or diced lemon

Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Liver Sauce for Fish

Ingredients

Directions

Boil the liver of the fish.
Pound it in a mortar with flour.
Stir it into broth, melted butter, or the liquor the fish was boiled in.
Add parsley, cayenne pepper, and essence of anchovy or soy sauce or ketchup.
Bring to a boil and rub through a sieve.
Optionally, add lemon juice or diced lemon.

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 + lemontop 1% of all pairs

Smell alikestrong

Cooked together14,037 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Pepper + lemontop 3% of all pairs

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Fish + anchovytop 9% of all pairs

Smell alikelow

Cooked together637 recipes

Shared aroma: decanal (soap, orange peel).
Fish + buttertop 12% of all pairs

Smell alikemoderate

Cooked together4,488 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).