Why it works: Gelatin and cream match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,628 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓
Coffee Mousse
Ingredients
Directions
Make the base
Dissolve gelatin in cold water, then add boiling water and stir until fully dissolved.
Mix in strong coffee and sugar, then strain the mixture and chill it, stirring occasionally.
Whip and set
When the mixture is partly set, beat it until foamy, then fold in the whipped cream.
Pour the mixture into a mold, cover it, and pack it in ice and salt. Let it stand for 4 to 6 hours.
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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Gelatin + creamtop 7% of all pairsSmell alikestrongCooked together1,628 recipes
Shared aroma: acetic acid (sour, vinegar).
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Gelatin + sugartop 7% of all pairsSmell alikemoderateCooked together2,778 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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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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Coffee + creamtop 17% of all pairsSmell alikelowCooked together2,339 recipes
Shared aroma: 2-heptanol (bitter, floral).
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Coffee + sugartop 17% of all pairsSmell alikelowCooked together4,344 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Gelatin
- Sets the liquid into a light, sliceable structure that holds the mousse together.
- Whipped cream
- Adds air and richness, giving the mousse its light, creamy texture.
- Strong coffee
- Provides the main coffee flavor and liquid for the mousse base.
- Sugar
- Sweetens the mousse and balances the bitterness of the coffee.
The step that matters
Beat the mixture only when partly set. If the gelatin mixture is too liquid, the foam collapses and the cream sinks. If it has set too firmly, it will not fold smoothly with the whipped cream and may leave lumps.
“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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