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 the quinces
Pare and slice the quinces thinly.
In an earthen pot, layer quinces and sugar.
Add lemon juice and water.
Cover with writing paper and a plate.
Slow-cook
Place in a slow oven at 300°F (150°C) for 2–3 hours.
Let sit overnight.
Repeat the next day until tender.
Finish and pot
Strain the syrup from the quinces.
Mash the quinces in a marble mortar.
Combine with syrup in a slow pan and boil for 20 minutes, skimming off the scum.
Once cool, transfer to pots and cover with paper dipped in brandy.
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 natural pectin that lets the marmalade set.
- Loaf sugar
- Sweetens the fruit and, as it dissolves, helps preserve and thicken the marmalade.
- Lemon juice
- Adds acidity that brightens flavour and supports pectin setting.
The step that matters
Slow-cook until tender. Quinces are hard and tart raw, and their pectin and starch only break down with long, gentle heat. Cooking too briefly leaves the fruit firm and the set weak, so repeat the slow baking until the fruit is fully tender before straining.
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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