Name: Cup Cake
Ingredients: 3 teacupfuls of flour; 1 teacupful of sweet milk; 1 teacupful of butter; 1 teaspoonful of baking powder; 2 teacupfuls of sugar; Vanilla to taste; 4 eggs

Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Cup Cake

Oven, in the book's wordsA good oven

Ingredients

Directions

The book says “a good oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Make the batter

Mix the baking powder thoroughly with the flour, then with the butter.
Beat the egg yolks with the sugar, then add the flour mixture.
Stir in the milk and the beaten egg whites until well combined.
Add vanilla to taste.

Bake

Pour the batter into a greased cake pan and bake until golden.

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 + vanillatop 5% of all pairs

Smell alikemoderate

Cooked together19,187 recipes

Shared aroma: ethyl caproate (fruity, apple peel).
Milk + buttertop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Sugar + vanillatop 8% of all pairs

Smell alikelow

Cooked together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Flour + buttertop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + vanillatop 12% of all pairs

Smell alikemoderate

Cooked together19,241 recipes

Shared aroma: isobutyraldehyde (malty, green).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Flour: Provides the structure that holds the cake together as it bakes.
Butter: Adds fat for tenderness and a rich texture.
Baking powder: Releases gas in the batter so the cake rises and becomes light.
Sugar: Sweetens the batter and helps the cake brown as it bakes.
Eggs: Add structure and richness, and the whites help trap air for lift.