Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Lemon Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the filling
Preheat the oven to 350°F (175°C).
Mix lemon juice and sugar in a bowl.
In a separate bowl, mix corn starch with a little water.
Pour boiling water over the corn starch mixture while stirring constantly.
Combine the lemon and sugar mixture with the corn starch mixture and let it cool.
Stir in the egg yolks and half of the beaten egg white.
Bake and top
Pour the mixture into the pie crust and bake until set.
Beat the remaining egg whites with 1½ tablespoons of sugar until stiff.
Spread the meringue over the pie and brown lightly 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.
-
Lemon + orangetop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Corn + orangetop 11% of all pairsSmell alikemoderateCooked together586 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Lemon + corntop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Lemon and sugar 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
- Corn starch
- Thickens the filling as it heats, giving it a firm, sliceable body.
- Egg yolks
- Enrich the filling and help it set into a custard-like texture.
- Egg white
- Whipped into the meringue, it traps air to form a light, stable topping.
- Lemon juice
- Provides the sharp acidity that defines the pie's flavor and balances the sugar.
- Sugar
- Sweetens the filling and, whipped with egg whites, stabilizes the meringue.
The step that matters
Pour boiling water over the corn starch while stirring constantly. Starch must be stirred as it hydrates and heats, or it forms lumps and thickens unevenly. Constant stirring keeps the filling smooth.
Swap the orange
The recipe marks orange as optional. How well each one fits the dish's main ingredients (lemon, sugar, corn, egg):
- Limefits about as well
- Vanillafits about as well
- Orangethe original
- Blueberryfits less well
Fit is the average pairing score against lemon, sugar, corn, 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
Orange Bundt Cake349 recipes
Lemon Cake228 recipes
Lemon Ice147 recipes
Orange Cream Rice Pudding121 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.