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 ↓
Chocolate Fudge
Ingredients
Directions
Make the fudge
Mix the brown sugar, white sugar, milk, and butter thoroughly in a pot.
Place the pot on the stove and bring to a boil for several minutes.
Add the grated chocolate to the pot.
Test the mixture by dropping a small amount into cold water.
When the mixture is barely stiff enough to be molded with fingers, add the flavoring.
Remove from heat and beat until it begins to harden.
Set and cut
Pour quickly into a large buttered pan and let it stand before cutting.
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.
Photo for illustrative purposes only · Contact us to use it
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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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Light brown sugar
- Adds sweetness and a molasses-like depth to the fudge.
- White sugar
- Provides sweetness and helps form the fine sugar crystals that set the fudge.
- Rich milk
- Supplies moisture and milk solids that give the fudge a creamy, soft texture.
- Butter
- Adds fat for a smooth, tender texture and richer flavor.
- Baker's chocolate
- Provides the chocolate flavor and firmness once melted into the mixture.
The step that matters
Testing the mixture in cold water. Sugar syrup must reach the right concentration before beating. Cooking too little leaves the fudge soft and runny, while cooking too long makes it hard and grainy. The cold-water test shows when it is ready.
“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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