Why it works: Chestnut and pineapple share more aroma than cooks usually use. They rank in the top 10% of all ingredient pairs, and cooks put them together in 67 recipes. Both carry ethyl pentanoate, which smells yeast, fruit. The science ↓
Chestnut Ice Cream
Ingredients
Directions
Make the custard
Beat the egg yolks in a bowl.
Pour the boiling milk over the egg yolks and return to the saucepan.
Stir until the custard thickens, being careful not to let it boil.
Strain the custard through a fine strainer.
Prepare the chestnuts
Peel the outer skins off the chestnuts and boil them for about 30 minutes.
Remove the inner skins and pound the chestnuts in a mortar.
Rub the chestnut paste through a fine sieve.
Add the custard to the chestnut paste and let it cool.
Mix in the kirsch or maraschino syrup.
Freeze and mould
Put the mixture into a freezer.
When partly frozen, mix in the whipped cream and freeze again.
Before moulding, mix in the preserved fruits.
When the mixture is thick, put it into a dome-shaped mould.
Cover and place in the ice cave for 2 hours.
Serve
To serve, dip the mould in cold water and turn out onto a napkin.
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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Chestnut + pineappletop 10% of all pairsSmell alikestrongCooked together67 recipes
Shared aroma: ethyl pentanoate (yeast, fruit).
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Syrup + creamtop 12% of all pairsSmell alikemoderateCooked together1,964 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Milk + pineappletop 12% of all pairsSmell alikemoderateCooked together885 recipes
Shared aroma: methyl 2-methylbutyrate (fruity, apple).
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Chestnut + syruptop 16% of all pairsSmell alikemoderateCooked together87 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Milk + creamtop 18% of all pairsSmell alikemoderateCooked together29,399 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the milk into a smooth custard base that gives the ice cream its richness.
- Chestnuts
- Provide the main flavour and a dense, starchy body once pounded into a paste.
- Milk
- Forms the liquid base of the custard, carrying the flavour and creaminess.
- Whipped cream
- Adds air and fat, making the frozen texture lighter and smoother.
- Kirsch or maraschino syrup
- Adds aroma and sweetness, and its alcohol keeps the ice cream softer when frozen.
- Preserved fruits
- Add chewy pieces and sweetness throughout the frozen dessert.
The step that matters
Stir the custard without letting it boil. Egg yolks scramble if overheated, turning the custard grainy and lumpy. Gentle stirring until it thickens keeps it smooth and silky.
Swap the chestnut
How well each one fits the dish's main ingredients (egg, milk, syrup, cream, pineapple):
- Almondfits about as well
- Chestnutthe original
- Pistachiofits about as well
- Pecansfits about as well
Fit is the average pairing score against egg, milk, syrup, cream, pineapple. 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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