Why it works: Chocolate and coffee are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 1,497 recipes. Both carry 2,3-butanedione, which smells buttery, creamy. The science ↓
Chocolate Ice Cream
Ingredients
Directions
Make the custard
Beat the eggs in a bowl.
Stir the beaten eggs into the milk.
Add the corn starch and powdered sugar.
Heat the mixture until it comes to a boil, stirring constantly.
Remove from heat once smooth and combined.
Finish and freeze
Mix in the cream and vanilla extract.
Taste and add more sugar if needed.
Chill the mixture, then pour it into a freezer to freeze.
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.
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Chocolate + coffeetop 5% of all pairsSmell alikemoderateCooked together1,497 recipes
Shared aroma: 2,3-butanedione (buttery, creamy).
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Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Coffee + vanillatop 9% of all pairsSmell alikemoderateCooked together1,391 recipes
Shared aroma: sotolon (curry, maple).
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
- Eggs
- Egg proteins thicken the custard as it heats and add richness.
- Corn starch
- Starch swells when heated, thickening the base so it is smooth rather than thin.
- Whole milk
- Forms the liquid base that the eggs and starch thicken into a custard.
- Cream
- Adds fat, which gives the frozen ice cream a smooth, creamy texture.
- Powdered sugar
- Adds sweetness and softens the frozen texture by interfering with ice crystal formation.
- Grated chocolate
- Provides the chocolate flavour that defines the dish.
The step that matters
Heating the custard. Stir constantly while heating. Eggs and starch thicken as the mixture heats, and without constant stirring they can scorch on the bottom of the pan or form lumps, leaving a grainy texture.
“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.
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