Why it works: Chocolate and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Smith College Fudge
Ingredients
Directions
Cook the mixture
Mix brown sugar, butter, cream, molasses, and chocolate together in a saucepan.
Cook the mixture until it forms a heavy thread.
Thicken and pour
Remove from heat and add vanilla.
Stir constantly until the mixture thickens.
Pour into buttered pans.
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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Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Brown sugar
- Adds sweetness and a caramel-like depth of flavour to the fudge.
- Butter
- Adds fat that gives the fudge a smooth, rich texture.
- Cream
- Adds moisture and richness, helping the fudge stay creamy.
- White sugar
- Sweetens the fudge and, as it cools, its crystals help set the texture.
- Molasses
- Adds sweetness, dark colour, and moisture to the fudge.
- Baker's chocolate
- Adds chocolate flavour, colour, and fat that firms the fudge as it sets.
The step that matters
Cooking to a heavy thread. Cooking the sugar mixture to the heavy thread stage concentrates the sugar and controls how firm the fudge sets. Stopping too early leaves the fudge soft and runny, while cooking too far makes it grainy or hard.
“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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