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 ↓
Floating Island
Ingredients
Directions
Make the custard
Beat the yolks of 6 eggs with the juice of 4 lemons and sugar to taste.
Stir the mixture into 1 quart of boiling milk until it thickens.
Pour the thickened custard into a dish.
Make the floating islands and serve
Whip the whites of the eggs to a stiff froth, adding a little powdered sugar.
In a pan with a little scalding milk, drop spoonfuls of the whipped whites; they will swell.
Place the whipped whites gently on top of the custard until all are used.
Flavor with vanilla or lemon extract.
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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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Lemon + vanillatop 15% of all pairsSmell alikemoderateCooked together5,961 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Lemon + milktop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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
- Egg yolks
- Thicken the custard as they set with heat, giving it a smooth, rich body.
- Egg whites
- Whip into a stiff foam that holds its airy shape and floats on the custard.
- Lemon juice
- Adds tartness that balances the sweetness of the custard.
- Milk
- Forms the base of the custard, which thickens when heated with the yolks.
The step that matters
Stirring the yolks into the boiling milk. If the egg yolks are added too quickly or the mixture is not stirred constantly, they can scramble. Stirring while adding the mixture keeps the yolks evenly dispersed so the custard thickens smoothly.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, milk, vanilla):
- Figfits better
- Peachfits better
- Blueberryfits better
- Lemonthe original
Fit is the average pairing score against egg, sugar, milk, vanilla. 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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