Why it works: Lemon and milk 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 ↓
Floating Island
Ingredients
Directions
Make the lemon gelatine
Soak the gelatine in water for 20 minutes.
Add sugar and bring to a boil.
Once nearly cold, fold in the beaten egg whites and lemon juice and rind.
Pour into a mold and refrigerate until set.
Make the custard
For the custard, whisk together egg yolks, milk, and cornstarch.
Sweeten to taste and cook until thickened.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Lemon + milktop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
-
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 mold once chilled.
- Egg whites
- Beaten and folded in to give the set gelatine a light, airy texture.
- Egg yolks
- Thicken the milk into a custard as they cook, adding richness.
- Milk
- Forms the base of the custard, adding creaminess and body.
- Cornstarch
- Thickens the custard so it holds a smooth, spoonable consistency.
- Lemon juice
- Adds acidity that brightens the sweetness of the gelatine.
The step that matters
Fold the egg whites in while the gelatine is nearly cold. If the gelatine is still warm, the beaten egg whites deflate and lose their air; if it has already set, they will not blend in evenly. Waiting for it to be nearly cold keeps the foam light while the mixture stays fluid enough to fold.
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.
More floating island recipes
You might also like
Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes
Lemon Custard64 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.