Why it works: Condensed milk and lime work together. They rank in the top 18% of all ingredient pairs, and cooks put them together in 122 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Key Lime Pie
Ingredients
Directions
Make the filling
Beat egg yolks until pale yellow.
Blend in milk and add juice, stirring until smooth.
Bake and chill
Pour into pie shell.
Bake in a 350°F oven for 15 minutes.
Cool to room temperature and then chill.
Nutrition, whole recipe (rough)
What these numbers assume: 4 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Milk | 1 cup (244ml) whole | 149 |
| Egg | 1 large egg (50g) | 78 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Lime | juice of 1 lime (44ml) | 11 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
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.
-
Condensed milk + limetop 18% of all pairsSmell alikelowCooked together122 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Egg + limetop 34% of all pairsSmell alikelowCooked together1,658 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + condensed milktop 38% of all pairsSmell alikelowCooked together591 recipes
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Add richness and help the filling set into a firm, custard-like texture.
- Condensed milk
- Provides sweetness and body, thickening the filling as it sets.
- Key lime juice
- Supplies the tart acidity that gives the pie its signature flavor.
- Graham crust
- Forms the crisp, sturdy base that holds the filling.
The step that matters
Cool fully before chilling. The filling sets as it cools, and the acid in the juice works with the egg yolk proteins to firm the custard. Cutting or chilling too early can leave it runny.
Swap the lime
How well each one fits the dish's main ingredients (egg, condensed milk):
- Coconutfits better
- Vanillafits better
- Bananafits better
- Limethe original
Fit is the average pairing score against egg, condensed 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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