Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
Opera Caramels
Ingredients
Directions
Make the caramel
Combine sugar and sweet cream in a large pot and bring to a boil.
Dissolve cream of tartar in a little water and add it to the boiling mixture.
Cook the mixture to the soft ball stage, stirring continuously.
Cool and shape
Pour the mixture onto a clean slab and let it cool.
Once cool, cream it as you would for fondant, adding vanilla extract during the process.
When set, knead it into a smooth mass.
Roll it out to the desired thickness between bars on the slab and on wax paper.
Level it with a rolling pin and mark with a caramel cutter.
Cut and set
Cut into strips four squares wide and place in 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.
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 + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sugar
- Provides the sweetness and forms the crystalline structure that sets the caramel firm.
- Sweet cream
- Adds fat and moisture, giving the caramel a soft, creamy texture.
- Cream of tartar
- Acid that helps keep sugar crystals small, so the caramel stays smooth.
The step that matters
Cook to the soft ball stage while stirring continuously. Cooking drives off water and concentrates the sugar, and the final sugar concentration decides how firm the caramel becomes as it cools. Stopping too early leaves it runny, while going too far makes it hard. Constant stirring keeps the sugar from scorching on the pot bottom and encourages even crystal formation.
“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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