Why it works: Apple and rum work together. They rank in the top 7% of all ingredient pairs, and cooks put them together in 214 recipes. Both carry isoamyl acetate, which smells banana, fruity. The science ↓
Apple Mould
Ingredients
Directions
Make the apple mixture
In a skillet, combine the chopped apples and sugar.
Add isinglass, lemon rind, lemon juice, and rum.
Boil until it reaches a rich jam consistency.
Rub the mixture through a fine sieve.
Mould and set
Grease a mould with salad oil or melted butter.
Press the apple mixture into the mould and smooth the top.
Chill in a cold place or on ice until firm.
Carefully turn out and serve with custard.
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 + rumtop 7% of all pairsSmell alikemoderateCooked together214 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Rum + buttertop 13% of all pairsSmell alikemoderateCooked together1,007 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Sugar + rumtop 14% of all pairsSmell alikelowCooked together2,908 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cooking apples
- Provide the bulk and pectin that give the mould its body and fruity flavour.
- Loaf sugar
- Sweetens the mixture and, by boiling, thickens it into a jam-like consistency.
- Isinglass
- A gelatine-like setting agent that firms the apple mixture as it chills.
- Rum
- Adds aroma and warmth that complements the lemon and apple.
The step that matters
Boil until a rich jam consistency. Boiling concentrates the sugar and apple pectin so the mixture sets firmly when chilled. Undercooked mixture stays soft and will not hold its shape when turned out, while overcooking makes it stiff and dense.
Swap the lemon
How well each one fits the dish's main ingredients (apple, sugar, rum, butter):
- Vanillafits better
- Bananafits better
- Pineapplefits better
- Lemonthe original
Fit is the average pairing score against apple, sugar, rum, butter. 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
Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes