Why it works: Vanilla and chocolate are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Glace Frosting
Ingredients
Directions
Make the syrup
Combine the sugar and water in a small saucepan.
Stir over medium heat until the sugar is nearly melted, then remove the spoon before it begins to boil.
Boil gently for 5 minutes without stirring.
Add the vanilla extract and do not stir; set aside to cool.
Whip and spread
When the syrup is lukewarm, whip until thick and white.
Place the saucepan in another with boiling water and stir until the icing is thin enough to pour.
Spread the icing on the cake quickly.
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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Vanilla + chocolatetop 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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Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Vanilla + buttertop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
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Butter + chocolatetop 16% of all pairsSmell alikemoderateCooked together10,543 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
- Granulated sugar
- Forms the syrup that sets into a smooth, glossy icing as it cools and is whipped.
- Water
- Dissolves the sugar so it can be heated into a syrup without scorching.
The step that matters
Remove the spoon before the syrup boils, then boil without stirring. Stirring once the sugar has dissolved can trigger crystal formation, leading to a grainy icing. Keeping the spoon out and the syrup undisturbed helps it stay smooth.
“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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