Why it works: Pineapple and lemon are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 1,964 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Pine-apple Marmalade
Ingredients
Directions
Macerate
Combine the pineapple pieces with one third of the sugar and let it sit overnight to extract the juice.
Boil in stages
The next day, boil the mixture for a short time.
Let it stand for two to three days, then repeat the boiling with another third of the sugar.
Allow it to sit for another day or two, then boil it again with the remaining sugar until clear.
Add lemon juice for a pleasant acidity, if desired.
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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Pineapple + lemontop 12% of all pairsSmell alikemoderateCooked together1,964 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Pineapple + sugartop 19% of all pairsSmell alikelowCooked together4,841 recipes
Shared aroma: 2-nonenal (fatty, green).
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
- Pineapple
- Provides the fruit base and its natural juice, which dissolves the sugar during resting.
- Sugar
- Sweetens the marmalade and, as it concentrates, helps it gel and preserve the fruit.
- Lemon juice
- Adds acidity that brightens the flavour and supports setting.
The step that matters
Boiling in stages with resting between. Repeated short boils and rests let the sugar dissolve gradually and the fruit soften and release pectin, helping the marmalade set clear rather than becoming syrupy or cloudy. Boiling too long at once can scorch the sugar or overcook the fruit.
Swap the lemon
The recipe marks lemon as optional. How well each one fits the dish's main ingredients (pineapple, sugar):
- Vanillafits better
- Bananafits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against pineapple, sugar. 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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