Name: Baked Codfish
Ingredients: 1 teacup codfish; 2 cups cold mashed potatoes; 1 pint sweet milk; 2 eggs; 1 good-sized lump of butter; pepper to taste; coarse sea salt to taste

Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Baked Codfish

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.

Prepare

Soak the codfish in lukewarm water.

Mix and bake

In a bowl, mix the cold mashed potatoes with sweet milk, eggs, butter, pepper, and salt.
Add the soaked codfish to the mixture and combine well.
Pour the mixture into a pudding dish.
Bake at 350°F (175°C) for 25 to 30 minutes.

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.

Milk + buttertop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Potato + peppertop 9% of all pairs

Smell alikemoderate

Cooked together8,305 recipes

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

Smell alikemoderate

Cooked together3,611 recipes

Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
Potato + buttertop 13% of all pairs

Smell alikemoderate

Cooked together6,456 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Egg + buttertop 17% of all pairs

Smell alikemoderate

Cooked together118,967 recipes

Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Codfish: Provides the main flavor and the fish body of the dish.
Mashed potatoes: Adds bulk and a soft, moist texture that holds the mixture together.
Eggs: Bind the mixture and help it set firm as it bakes.
Sweet milk: Adds moisture and softness to the mixture.
Butter: Adds richness and fat, improving flavor and moistness.