Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Butter Scotch
Ingredients
Directions
Make the candy
In a saucepan, combine the white sugar, molasses, and butter.
Boil the mixture until it hardens when dropped into cold water.
Remove from heat and stir in the vanilla extract.
Set
Pour the mixture into buttered pans and let it 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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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + vanillatop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Molasses + vanillatop 24% of all pairsSmell alikelowCooked together732 recipes
Shared aroma: ethyl isobutyrate (fruity, 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
- White sugar
- Provides sweetness and, as it cooks, helps form the hard brittle candy structure.
- Molasses
- Adds deep flavor and color, and contributes to the candy's chewy, brittle texture.
- Butter
- Adds richness and fat, giving the candy a smooth, tender bite as it sets.
The step that matters
Boil until it hardens in cold water. Sugar candy sets according to how far its water has boiled off. Boiling too little leaves a sticky, soft candy, while boiling too long makes it bitter or hard to bite. The cold-water test shows when the sugar has reached the right concentration.
Swap the vanilla
How well each one fits the dish's main ingredients (sugar, molasses, butter):
- Vanillathe original
- Raisinfits about as well
- Figfits less well
- Applefits less well
Fit is the average pairing score against sugar, molasses, 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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