Name: Chocolate Ice Cream
Ingredients: 1 quart milk; 3 eggs; 5 tablespoons sweet chocolate powder or breakfast cocoa; 2 cups sugar; 1 teaspoon vanilla

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 ↓

Chocolate Ice Cream

Ingredients

Directions

Prepare the base

Scald the milk in a saucepan.
In a bowl, beat the eggs.
Mix the chocolate powder with enough warm milk to make a smooth paste.
Add the sugar to the chocolate mixture and combine well.

Finish and freeze

Once the milk has cooled, add it to the chocolate mixture.
Stir in the vanilla and freeze the mixture.

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).
Chocolate + vanillatop 5% of all pairs

Smell alikemoderate

Cooked together10,020 recipes

Shared aroma: sotolon (curry, maple).
Sugar + vanillatop 8% of all pairs

Smell alikelow

Cooked together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Chocolate + sugartop 13% of all pairs

Smell alikemoderate

Cooked together15,404 recipes

Shared aroma: guaiacol (smoky, sweet).
Milk + chocolatetop 13% of all pairs

Smell alikemoderate

Cooked together9,128 recipes

Shared aroma: gamma-nonanolactone (coconut, sweet).

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

Milk: Forms the liquid base that carries the chocolate and sugar through the custard.
Eggs: Thicken the base and add richness and structure to the frozen cream.
Sweet chocolate powder or breakfast cocoa: Provides the chocolate flavour and colour of the ice cream.
Sugar: Adds sweetness and lowers the freezing point, keeping the ice cream softer.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.