Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Orange Pif
Ingredients
Directions
The book says “a quick oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Line a dish with pie crust.
Make the custard
In a bowl, mix the orange juice and rind, sugar, egg yolks, flour, and milk until smooth.
Pour the custard mixture into the lined dish.
Bake until set.
Top with meringue and finish
Beat the egg whites to stiff peaks, then gradually add 4 tablespoons of sugar.
Spread the meringue over the pie and lightly brown it 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.
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Orange + milktop 15% of all pairsSmell alikemoderateCooked together4,696 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
-
Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and milk barely smell alike, yet cooks put them together in 78,219 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
- Egg yolks
- Thicken the custard as they set, giving it a rich, sliceable structure.
- Flour
- Stabilises the custard so it sets smoothly rather than turning grainy or watery.
- Milk
- Provides liquid that gives the custard its body and creamy moisture.
- Sugar
- Sweetens the custard and helps stabilise the whipped egg white meringue.
- Orange
- Adds bright acidity and citrus aroma from the juice and rind.
- Egg whites
- Whipped into foam to form the meringue topping, providing airy structure that browns.
The step that matters
Bake the custard until set. Egg yolks and flour thicken as they heat, but underbaking leaves the custard runny and overbaking can make it weep or curdle. Check that the centre has firmed before adding the meringue.
Swap the orange
How well each one fits the dish's main ingredients (sugar, egg, flour, milk):
- Vanillafits better
- Raisinfits better
- Figfits better
- Orangethe original
Fit is the average pairing score against sugar, egg, flour, 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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