Why it works: Quince and lemon match in chemistry and in kitchens. They rank in the top 11% of all ingredient pairs, and cooks put them together in 336 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
Marmalade of Quinces
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Pare and slice the quinces thinly.
In an earthen pot, layer the quinces and sugar.
Squeeze in the lemon juice and add the water.
Cover with writing paper and a plate.
Stew
Place in a 300°F (150°C) oven and stew for 2-3 hours.
Let it stand overnight.
Repeat the stewing process the next day until the quinces are tender.
Finish and store
Strain the syrup.
Mash the quinces in a marble mortar.
Combine the mashed quinces with the syrup in a stew-pan.
Boil for 20 minutes, skimming off any scum.
Once cooled, transfer to pots for storage.
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.
-
Quince + lemontop 11% of all pairsSmell alikestrongCooked together336 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 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).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Quinces
- Provide the fruit body and pectin that thickens the marmalade as it stews and reduces.
- Sugar
- Sweetens the fruit and, at high concentration, helps the marmalade set and keep.
- Lemon juice
- Adds acidity that brightens flavour and supports pectin gel formation.
The step that matters
Repeat the stewing until the quinces are tender. Quince is very firm and pectin-rich; if it is not fully softened before boiling, the pieces stay hard and the set is uneven. Slow stewing over days softens the fruit gently without breaking it down too quickly.
Swap the quince
How well each one fits the dish's main ingredients (sugar, lemon):
- Orangefits better
- Limefits better
- Vanillafits better
- Quincethe original
Fit is the average pairing score against sugar, lemon. 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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