Why it works: Cream and sugar are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
Chocolate Ice Cream
Ingredients
Directions
Make the custard
Boil the milk in a double boiler.
Mix the flour and 1 cup of sugar.
Add the eggs and beat until light.
Stir the mixture into the boiling milk.
Cook for 20 minutes, stirring often.
Add the chocolate
In a small saucepan, combine the chocolate, 4 tablespoons of sugar, and hot water.
Stir over heat until smooth and glossy.
Add the chocolate mixture to the cooking mixture, then remove from heat.
Finish and freeze
Stir in the remaining sugar and cream gradually.
Let the mixture cool.
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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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Cream + chocolatetop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Milk + chocolatetop 13% of all pairsSmell alikemoderateCooked together9,128 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Milk and flour barely smell alike, yet cooks put them together in 78,219 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
- Their proteins set when heated, thickening the custard base.
- Flour
- Its starch swells with heat, thickening the custard and giving body.
- Chocolate
- Provides the main chocolate flavor and some fat for a smooth texture.
- Cream
- Adds fat, which makes the ice cream rich and creamy rather than icy.
- Sugar
- Adds sweetness and lowers the freezing point, keeping the ice cream softer.
- Milk
- Forms the liquid base that the thickened custard is built on.
The step that matters
Cooking the custard over a double boiler. Egg proteins can scramble if the mixture gets too hot or is not stirred. Gentle heat and frequent stirring thicken it smoothly, so the custard stays silky.
“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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