Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Sultana Roll
Ingredients
Directions
Make the custard
Combine milk, sugar, flour, egg, and salt in a saucepan.
Cook over medium heat for 20 minutes, stirring frequently.
Strain the mixture and let it cool.
Add ordinary cream and vanilla.
Freeze the mixture.
Assemble and pack
Line a mold with a 1-inch layer of the custard.
Fill the hollow with sweetened whipped cream mixed with soaked sultana raisins.
Pack the mold in ice and salt.
Let it stand for 4 hours before serving.
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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Flour + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Vanilla + brandytop 11% of all pairsSmell alikemoderateCooked together806 recipes
Shared aroma: beta-damascenone (apple, rose).
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
- Helps thicken the custard and gives it a rich, set structure as it cooks.
- Sugar
- Adds sweetness and softens the frozen texture so it is not icy.
- Flour
- Thickens the milk mixture so the custard holds its body during cooking.
- Ordinary cream
- Adds fat, which makes the frozen custard smooth and creamy.
- Milk
- Provides the liquid base that the custard is cooked and thickened from.
The step that matters
Freeze the mixture. Cooling and freezing the custard fully before layering sets its texture. Ice crystals form in a slow, warm freeze and make the dessert grainy, so the custard should be well chilled first.
Swap the raisin
How well each one fits the dish's main ingredients (milk, sugar, flour, egg, cream, vanilla, brandy):
- Raisinthe original
- Figfits about as well
- Strawberryfits about as well
- Apricotfits about as well
Fit is the average pairing score against milk, sugar, flour, egg, cream, vanilla, brandy. 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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