Why it works: Apple and quince work together. They rank in the top 1% of all ingredient pairs, and cooks put them together in 506 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓
Quince and Apple Butter
Ingredients
Directions
Cook the fruit
Mix the apples and quinces in a large pot.
Add 5 quarts of boiled cider and boil for the entire day.
Cover the parts with water and boil until the gluten is extracted, then strain and add to the fruit mixture.
Finish and jar
Stir in 1 coffee cup of sugar and 2 quarts of boiled cider that has been reduced to a thick syrup.
To test if the butter is done, place a small amount on a plate and invert it; if it adheres, it's ready.
Fill Mason jars with the butter and seal.
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.
-
Apple + quincetop 1% of all pairsSmell alikemoderateCooked together506 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
-
Apple + cidertop 2% of all pairsSmell alikemoderateCooked together1,238 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
-
Sugar + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Quince + cidertop 12% of all pairsSmell alikemoderateCooked together46 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
-
Coffee + syruptop 15% of all pairsSmell alikelowCooked together318 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Quinces
- Their high natural pectin helps the butter thicken and set as it cooks.
- Apples
- They supply body and pectin, giving the butter its smooth, spreadable structure.
- Boiled cider
- Its concentrated sweetness and tang deepen the flavor, and reducing it adds thickness.
- Sugar
- Adds sweetness and helps the butter thicken as water evaporates during long cooking.
The step that matters
Test doneness by inverting a small amount on a plate. As water evaporates, the fruit and sugar concentrate and the butter thickens. Stopping too early leaves it runny and prone to spoiling in jars, while cooking too long makes it stiff.
Swap the quince
How well each one fits the dish's main ingredients (apple, cider, coffee, sugar, syrup):
- Vanillafits better
- Pearfits better
- Figfits about as well
- Quincethe original
Fit is the average pairing score against apple, cider, coffee, sugar, syrup. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Apple Pudding256 recipes
Quince Jelly131 recipes
Coffee Ice Cream91 recipes
Apple Cake80 recipes