Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Caramel Filling
Ingredients
Directions
Make the caramel
Combine 3½ cups of sugar and the milk in a double boiler.
In a frying pan, melt the remaining cup of sugar with the butter, stirring constantly until it turns brown.
Add the browned mixture to the double boiler and mix thoroughly.
Cook and finish
Place the upper part of the double boiler on the stove and boil rapidly until it thickens.
Remove from heat, add vanilla, and beat for a few minutes.
Spread the caramel filling on the 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.
Photo for illustrative purposes only · Contact us to use it
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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Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Butter + vanillatop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Sugar
- Caramelises to give the filling its brown colour and deep, sweet flavour.
- Milk
- Provides the liquid base that thickens into a creamy filling.
- Butter
- Adds fat for richness and smooth texture in the caramel.
The step that matters
Browning the sugar in the frying pan. Sugar can go from amber to burnt quickly. Stirring constantly and stopping at brown keeps the flavour rich and bitter-free, which affects the whole filling.
“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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