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 ↓
Naple Biscuits, or Charlotte Russe
Ingredients
Directions
Make the cake shells
Prepare a double batch of sponge cake and bake in round deep patty pans.
Once cooled, cut out the inside about ¼ inch from the edge and bottom to create a shell.
Fill and top
Replace the inside with a custard made from beaten yolks of 4 eggs mixed with 1 pint of boiling milk, sweetened and flavored.
Spread jelly or jam on top of the custard.
Beat the whites of 3 eggs with 3 heaping tablespoons of powdered sugar until stiff peaks form, then add a little flavoring.
Spread the meringue over the jelly and set aside in a cool place until ready to serve.
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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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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Flour + vanillatop 12% of all pairsSmell alikemoderateCooked together19,241 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- Eggs
- Yolks thicken the custard filling, while whites whip into a stable meringue topping.
- All-purpose flour
- Forms the structure of the sponge cake shells.
- Sugar
- Sweetens the sponge cake, custard and meringue, and helps the meringue hold its shape.
- Milk
- Cooked with the yolks, it forms the body of the custard filling.
- Powdered sugar
- Dissolves easily into the whipped whites, stabilizing the meringue.
The step that matters
Whipping the meringue to stiff peaks. Egg whites must be beaten until stiff peaks form so the meringue holds its shape. Underbeaten whites stay runny and slump over the jelly, while overbeaten whites turn grainy and weep.
Swap the vanilla
How well each one fits the dish's main ingredients (flour, sugar, egg, milk):
- Vanillathe original
- Raisinfits about as well
- Figfits less well
- Blueberryfits less well
Fit is the average pairing score against flour, sugar, egg, milk. 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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