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 ↓
Grape Sponge
Ingredients
Directions
Prepare the gelatine
Soak the gelatine in cold water.
Make the grape mixture
Dissolve the sugar in grape juice and add the lemon juice.
Strain the mixture and combine it with the dissolved gelatine.
Let it cool.
Whip and serve
Beat the egg whites until stiff.
When the gelatine mixture begins to thicken, gradually add it to the beaten egg whites, beating until very light.
Serve very cold with sweetened cream.
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).
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Grape + lemontop 14% of all pairsSmell alikemoderateCooked together2,412 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Gelatine
- Sets the juice mixture so the sponge holds its shape when chilled.
- Egg whites
- Whipped to foam, they give the sponge its light, airy texture.
- Sugar
- Sweetens the grape juice and helps balance its tartness.
- Grape juice
- Provides the main flavour and liquid base of the sponge.
- Lemon juice
- Adds acidity that brightens the sweetness of the grape juice.
The step that matters
Adding the gelatine mixture to the egg whites. The gelatine must be only beginning to thicken before it is added. If it is fully set, it forms lumps and won't fold into the foam. If it is still too liquid, the foam deflates and the sponge loses its lightness.
Swap the grape
How well each one fits the dish's main ingredients (sugar, lemon, egg, cream):
- Vanillafits better
- Raspberryfits better
- Orangefits better
- Grapethe original
Fit is the average pairing score against sugar, lemon, egg, cream. 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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