Why it works: Sugar and molasses are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 9,225 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Preserved Quinces
Ingredients
Directions
Prepare the quinces
Soak quinces in water for 10-12 hours.
Pare, halve, and core the quinces.
Make the syrup
Cover quinces with syrup in a preserving kettle.
Boil gently until tender.
Remove from heat when a broom splinter goes through easily.
Strain the syrup.
Boil the syrup down to cover the fruit.
Boil the parings in new cider until soft.
Strain the cider.
Mix the cider with brown sugar, molasses, and egg white.
Clarify the mixture.
Finish and store
Add the quinces to the mixture.
Boil slowly for 30 minutes.
Keep covered while boiling for a light color.
Transfer to pots.
Store in a cool place.
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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Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Quince + sugartop 21% of all pairsSmell alikemoderateCooked together1,444 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
-
Quince + molassestop 29% of all pairsSmell alikelowCooked together39 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
-
Quince + eggtop 33% of all pairsSmell alikelowCooked together222 recipes
Shared aroma: 2-heptenal (green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Quinces
- Form the fruit itself, which softens and turns tender and translucent during long gentle cooking.
- Brown sugar
- Adds sweetness and helps preserve the fruit by drawing out moisture as it thickens.
- Molasses
- Adds dark color, deep sweetness and a rich caramel-like flavor.
- Egg white
- Is used in clarifying the mixture, where it binds impurities so they can be removed.
The step that matters
Keep covered while boiling for a light color. Exposure to air and long heat darkens fruit through browning, so keeping the pot covered limits oxidation and helps preserve a lighter color.
Swap the quince
How well each one fits the dish's main ingredients (sugar, molasses, egg):
- Raisinfits better
- Vanillafits better
- Figfits better
- Quincethe original
Fit is the average pairing score against sugar, molasses, egg. 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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