Why it works: Milk and lemon are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 19,053 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Milk Jelly
Ingredients
Directions
Prepare
Soak the gelatine in ½ cup cold water for 1 hour.
Put the rind of one lemon into the milk and bring to a boil.
Whisk the eggs in a large bowl.
Make the jelly
Add the sugar and soaked gelatine to the bowl.
Strain the hot milk over the mixture and stir until cold.
Add the juice of the lemons and pour into a mold.
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 + lemontop 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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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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 liquid into a firm, sliceable jelly as it cools.
- Whole milk
- Forms the creamy base and gives the jelly its body and softness.
- Eggs
- Add richness and help thicken the mixture into a smooth custard-like base.
- Loaf sugar
- Sweetens the jelly and balances the sharpness of the lemon.
- Lemons
- Add acidity and bright lemon aroma from the rind and juice.
The step that matters
Strain the hot milk over the eggs and sugar. Pouring hot milk into the eggs too quickly can scramble them. Pour slowly while whisking constantly, so the eggs warm gradually and the mixture stays smooth.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg, milk):
- Vanillafits better
- Figfits about as well
- Raisinfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, egg, milk. 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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