Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Butter Cups
Ingredients
Directions
Make the sugar base
Combine sugar and water in a large pot.
Bring the mixture to a boil.
Add molasses and cream of tartar.
Cook until the mixture reaches 310°F (154°C).
Stir in the butter until dissolved.
Pour the mixture onto a greased slab.
Let it cool slightly.
Prepare the vanilla cream
Work the vanilla cream until smooth.
Warm the vanilla cream over a heater, turning continuously.
Shape and finish
Once the sugar mixture is cool enough to handle, spread it into a sheet about 1 inch thick, 12–14 inches wide, and 16 inches long.
Place the warm vanilla cream in a roll down the center of the sugar sheet.
Fold the sugar over the cream, meeting the edges.
Roll the candy before the heater until warm enough to work with.
Spin out the candy into stick shapes.
Mark with a caramel marker.
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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Cream + buttertop 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).
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Butter + vanillatop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Sugar
- Forms the sweet crystalline body of the candy once cooked and cooled.
- Molasses
- Adds deeper flavour and colour and contributes to a softer texture.
- Cream of tartar
- Acidity that helps prevent sugar from crystallising too early, keeping the candy smooth.
- Sweet butter
- Adds fat for richness and a tender, melting texture in the candy.
- Vanilla cream
- Forms the soft filling that is folded into the sugar sheet, adding flavour and contrast.
The step that matters
Cook until the mixture reaches 310°F (154°C). Cooking to the target temperature controls how much water boils off, which sets the final firmness. Undercooking leaves the candy soft and sticky, while overcooking makes it hard and brittle.
“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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