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 ↓
Fudge or “plowed Field.”
Ingredients
Directions
Mix brown sugar, white sugar, molasses, and cream in a bowl.
Melt the butter and add it to the mixture.
Bring to a boil and boil for two to three minutes, stirring rapidly.
Add grated or scraped chocolate and boil for five minutes, stirring rapidly at first, then more slowly.
Remove from heat and add vanilla.
Stir until the mixture thickens.
Pour into buttered pans and let cool.
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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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 moisture and a deep, caramel-like sweetness.
- White sugar
- Provides sweetness and the crystal structure that the fudge sets around.
- Butter
- Adds fat for a smooth, tender texture.
- Chocolate
- Gives the fudge its chocolate flavour and firmness as it cools.
- Cream
- Adds richness and moisture, keeping the fudge soft.
The step that matters
Stir until the mixture thickens. Stirring while the mixture cools and thickens encourages fine sugar crystals to form, giving a smooth texture rather than a grainy one. Stirring too early or too late changes the result.
“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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