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 ↓
To Make Fondant
Ingredients
Directions
Make the syrup
Combine sugar, cream of tartar, and water in a saucepan.
Bring to a boil without stirring until it reaches 236°F to 238°F (soft ball stage).
Test and cool
Test by dropping a little into cold water; it should form a soft ball.
Remove from heat and let cool until a crust forms.
Finish the fondant
Stir until thick and creamy; if it becomes grainy, reheat with a little cool water.
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
- Forms the sweet crystalline base that sets into the smooth, soft fondant texture.
- Cream of tartar
- Acidifies the syrup, helping prevent sugar from crystallizing unevenly and keeping the texture smooth.
- Water
- Dissolves the sugar so it can be heated into a syrup without scorching.
The step that matters
Boiling without stirring. Stirring while the syrup boils can trigger sugar crystals to form, which makes the fondant grainy. Heating to the soft ball stage controls how much water remains, which determines the final firmness.
“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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