Why it works: Chocolate and sugar are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 15,404 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Chocolate Custard
Ingredients
Directions
Make the custard
Dissolve the chocolate in the milk over low heat.
In a bowl, beat the egg yolks, then add the sugar and cornstarch.
Slowly stir the egg mixture into the boiling milk with chocolate.
Add a pinch of salt and cook for a few minutes, stirring constantly.
Serve
Serve cold with cake.
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 + sugartop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Chocolate + milktop 13% of all pairsSmell alikemoderateCooked together9,128 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Milk + sugartop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Milk and sugar barely smell alike, yet cooks put them together in 77,875 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
- Chocolate
- Provides the main flavor and adds richness and body to the custard.
- Milk
- Forms the liquid base that the custard thickens and sets within.
- Egg yolks
- Thicken and set the custard as their proteins coagulate with gentle heat, adding richness.
- Sugar
- Adds sweetness and balances the bitterness of the chocolate.
- Cornstarch
- Thickens the custard as its starch granules swell and gelatinize in hot liquid.
The step that matters
Slowly stir the egg mixture into the boiling milk. Adding the eggs gradually, while stirring, tempers them so they do not scramble. Stirring keeps heat even so the yolks and starch thicken the custard smoothly instead of forming lumps.
“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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