Why it works: Vanilla and coconut match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 2,294 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Boiled Icing
Ingredients
Directions
Make the syrup
Boil 1 pound of granulated sugar and ½ cup of water together until a thick syrup forms.
Test the syrup by dropping some into cold water; it should form a jelly‑like consistency.
Make the icing
Beat 2 egg whites until very light, then gradually beat in the boiling syrup.
Flavor to taste and continue beating until nearly cold.
Ice the cake
Drop spoonfuls of icing onto the cake; when they cool and do not run, apply the rest quickly.
For a layer cake icing, boil 1 cup of sugar and ½ cup of sweet milk until it reaches the same consistency.
Flavor to taste and add chopped nuts, citron, or stewed raisins if desired.
You can also boil grated coconut or chocolate with the icing.
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 + coconuttop 1% of all pairsSmell alikestrongCooked together2,294 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Vanilla + milktop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Vanilla + nutstop 8% of all pairsSmell alikemoderateCooked together638 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Milk + coconuttop 10% of all pairsSmell alikemoderateCooked together2,648 recipes
Shared aroma: delta-dodecalactone (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 the icing's body and sweetness.
- Egg whites
- Whipped to a light foam that gives the icing volume and a fluffy texture.
The step that matters
Beating the boiling syrup into the egg whites. Pouring hot syrup in gradually while beating keeps the whites from scrambling and lets the mixture cook and thicken into a smooth, stable icing.
Swap the nuts
The recipe marks nuts as optional. How well each one fits the dish's main ingredients (sugar, egg, vanilla, lemon, milk, coconut):
- Almondfits better
- Macadamia nutfits better
- Pistachiofits better
- Nutsthe original
Fit is the average pairing score against sugar, egg, vanilla, lemon, milk, coconut. Candidates are from the same food group and used in at least 100 recipes.
“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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