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 ↓
Fudge
Ingredients
Directions
Combine sugar and sweet milk in a saucepan.
Boil and stir constantly.
Add butter just before removing from heat.
Stir in ground chocolate.
Continue cooking until it reaches the desired consistency.
Pour into a buttered pan and let cool before cutting into squares.
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 + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Milk + chocolatetop 13% of all pairsSmell alikemoderateCooked together9,128 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Butter + chocolatetop 16% of all pairsSmell alikemoderateCooked together10,543 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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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
- Granulated sugar
- Provides sweetness and, as it dissolves and cooks, forms the fudge's sugar structure.
- Sweet milk
- Supplies liquid and milk solids that give the fudge a creamy, soft texture.
- Butter
- Adds fat that makes the fudge smooth and rich in mouthfeel.
- Ground chocolate
- Adds chocolate flavor and color to the fudge.
The step that matters
Continue cooking until it reaches the desired consistency. Sugar concentration rises as water evaporates during boiling, which sets the final texture. Cooking too little leaves the fudge soft and runny, while cooking too long makes it hard and grainy. Stirring constantly helps prevent sugar crystals from forming unevenly.
“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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