Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Nut Fudge
Ingredients
Directions
In a pan, combine the brown sugar and cocoa powder mixed with a little water.
Fill the cup with milk and stir it into the sugar mixture.
Place the pan on the stove and bring to a boil, watching carefully.
Let it boil for 15 minutes, then add the butter and stir briefly.
To test, drop a teaspoonful of the mixture into a cup of cold water; it should form a soft ball.
Remove from heat and stir in the chopped nuts until the mixture thickens.
Pour onto buttered pans and cut into small pieces once set.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Sugar + cocoa powdertop 14% of all pairsSmell alikemoderateCooked together2,920 recipes
Shared aroma: guaiacol (smoky, sweet).
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Cocoa powder + buttertop 14% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
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Milk + nutstop 17% of all pairsSmell alikemoderateCooked together982 recipes
Shared aroma: furaneol (caramel, strawberry).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Brown sugar
- Provides sweetness and the bulk of the fudge's body as it dissolves and cooks.
- Cocoa powder
- Adds chocolate flavour and colour to the fudge.
- Milk
- Adds moisture and dairy richness, helping the sugar form a creamy texture.
- Butter
- Adds fat for a smooth, rich texture and mouthfeel.
- Nuts
- Add crunch and nutty flavour against the soft fudge.
The step that matters
Boiling and the soft-ball test. Sugar candy sets according to how much water has cooked off, so boiling too long makes fudge hard and too short leaves it soft. The cold-water soft-ball test checks the stage before removing it from heat.
Swap the nuts
How well each one fits the dish's main ingredients (sugar, cocoa powder, milk, butter):
- Cocoafits better
- Almondfits better
- Hazelnutfits better
- Nutsthe original
Fit is the average pairing score against sugar, cocoa powder, milk, 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.
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