Why it works: Milk and corn are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 6,955 recipes. Both carry hexanal, which smells green, grassy. The science ↓
Jelly and Custard
Ingredients
Directions
Make the jelly
Soak the gelatin in enough water to cover it.
Pour 1 pint of boiling water over the soaked gelatin.
Add 1 cup of white sugar and the juice of 1 lemon, then a few drops of lemon essence; set aside to stiffen.
Once the jelly is set, cut it into squares.
Make the custard
In a saucepan, combine 1½ pints of milk, the yolks of 3 eggs, and 1 tablespoon of corn starch.
Cook the mixture until thickened, adding sugar and flavoring to taste.
Assemble and top
Layer the jelly squares in the bottom of a dish, pouring in some cold custard between layers until all custard is used.
Beat the whites of 3 eggs to stiff peaks, adding 2-3 teaspoons of confectioners' sugar.
Place the whipped egg whites on top in pieces with jelly.
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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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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Lemon + corntop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + milktop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 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 dissolved liquid into a firm jelly that holds its cut shape.
- Egg yolks
- Thicken the milk into a smooth custard as they cook.
- Corn starch
- Thickens the custard so it holds its body when cooled.
- Egg whites
- Whipped to stiff peaks, they form a light, airy topping.
- White sugar
- Sweetens the jelly and balances the lemon's acidity.
The step that matters
Cooking the custard. Egg yolks and starch thicken the milk only with gentle heat. If the mixture boils too hard or too fast, the yolks can scramble and the custard turns grainy or lumpy, so stir constantly and cook until it just thickens.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, milk, egg, corn):
- Vanillafits better
- Coconutfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against sugar, milk, egg, corn. 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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