Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Meringue Pie
Ingredients
Directions
Make the filling
Boil 1 cup of sugar, a pinch of salt, and water.
Add 2 tablespoons of cornstarch moistened with cold water and cook for five minutes.
Stir in the yolks of 2 eggs, lemon juice, lemon rind, and salt.
Cool slightly and pour the mixture into a pre-baked pie crust.
Top and bake
Cover with meringue made from 2 tablespoons of sugar and brown in the oven.
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.
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 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 + 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
- Cornstarch
- Thickens the lemon filling as it cooks, giving it a sliceable set.
- Eggs
- Egg yolks enrich the filling and help it set into a smooth custard.
- Sugar
- Sweetens the filling and helps stabilise the meringue topping.
- Lemon juice
- Adds acidity that brightens the filling and balances the sweetness.
The step that matters
Cook the cornstarch mixture for the full five minutes. Cornstarch thickens only when its starch granules swell and gelatinise at a boil. Undercooking leaves the filling thin and runny, so it will not set properly when cooled.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
Fit is the average pairing score against sugar, egg. 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.
You might also like
The 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.
Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes
Lemon Custard64 recipes