Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Bristol Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 350°F (175°C).
Beat the butter and sugar together until creamy.
Add the eggs one at a time, mixing well after each addition.
Stir in the slightly warmed milk and treacle.
Fold in the lemon peel, orange peel, and currants.
Gradually add the self-raising flour until well combined.
Bake and serve
Pour the batter into a greased cake pan.
Bake for 4 hours or until a toothpick inserted comes out clean.
Allow to cool and serve with almond icing on top.
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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Lemon + orangetop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Eggs
- Bind the batter and add structure as the cake bakes and sets.
- Self-raising flour
- Provides the main structure of the cake as its starch sets during baking.
- Butter
- Creamed with the sugar to trap air and add tenderness and richness.
- Dark brown sugar
- Adds sweetness and moisture, and helps the crumb brown during baking.
- Treacle
- Adds moisture, deep flavour and dark colour to the cake.
- Currants
- Provide chewy pockets of fruit sweetness throughout the cake.
The step that matters
Bake for the full time at a moderate heat. A long, moderate bake lets the centre set fully without the outside burning. Checking with a toothpick confirms the centre is cooked through before cooling.
Swap the currant
How well each one fits the dish's main ingredients (butter, lemon, orange, milk, sugar, flour, egg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Currantthe original
Fit is the average pairing score against butter, lemon, orange, milk, sugar, flour, egg. 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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