Name: Chocolate Ice Cream
Ingredients: 3 ounces bitter chocolate; 1 gallon cream or boiled custard; sour milk (to boil with chocolate); sugar (to taste); vanilla (for flavoring)

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

3 ounces bitter chocolate
1 gallon cream or boiled custard
sour milk (to boil with chocolate)
sugar (to taste)
vanilla (for flavoring)

Directions

Make the chocolate base

Boil the chocolate with sour milk until melted.
Sweeten the mixture to taste.
Strain the chocolate mixture into the cream or boiled custard.

Finish the ice cream

Add vanilla for flavoring.
Beat the ice cream until it has a bright, rich color.

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).
Cream + sugartop 9% of all pairs

Smell alikemoderate

Cooked together43,450 recipes

Shared aroma: 2,3-butanedione (butter, sweet).
Chocolate + creamtop 11% of all pairs

Smell alikemoderate

Cooked together5,466 recipes

Shared aroma: delta-decalactone (sweet, creamy).

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

Bitter chocolate: Provides the main chocolate flavor and deep color of the ice cream.
Cream or boiled custard: Forms the rich, creamy base that gives the ice cream its body and smooth texture.
Sour milk: Helps melt the chocolate smoothly into the mixture before it is combined with the base.
Sugar: Adds sweetness to balance the bitterness of the chocolate.

“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.