Why it works: Apple and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 16,478 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Blackberry Jelly II
Ingredients
Directions
Make the juice
Add blackberries and chopped apples to a pot with a little water.
Cook until soft, then strain through a jelly bag to extract the juice.
Make the jelly
For every pint of juice, add a pint of sugar.
Cook the mixture until it reaches a jelly consistency.
Test by placing a teaspoon of the liquid in a cool place; if it jellies, pour into glasses.
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 + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
Apple and sugar barely smell alike, yet cooks put them together in 16,478 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
- Blackberries
- Provide the main fruit flavor, color, and natural pectin-bearing juice for the jelly.
- Apples
- Add natural pectin that helps the jelly set.
- Sugar
- Adds sweetness and helps the juice thicken into a jelly as it cooks.
The step that matters
Testing for set. Jelly sets only when cooked long enough to reach the gel point, where sugar, pectin, and acid balance. Testing a cooled spoonful shows whether it will firm up before the batch is poured into glasses, preventing a runny result.
“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
Apple Pudding256 recipes
Apple Cake80 recipes
Apple Meringue75 recipes
Dried Apple Cake51 recipesThe 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.