Why it works: Rhubarb and lemon match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 546 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓
Raisin and Rhubarb Pie
Ingredients
Directions
Prepare the filling
Remove the pits from the raisins and chop them finely.
Chop the rhubarb.
Combine the chopped rhubarb with the sugar and grated lemon rind in a saucepan.
Cook the mixture until it thickens.
Remove the saucepan from heat.
Stir in the egg yolks and mix well.
Let the filling cool thoroughly.
Assemble and bake
Pour the cooled filling into a pre-baked pie shell.
Top the pie with meringue.
Brown the meringue 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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Rhubarb + lemontop 7% of all pairsSmell alikestrongCooked together546 recipes
Shared aroma: acetic acid (sour, vinegar).
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Raisin + rhubarbtop 9% of all pairsSmell alikemoderateCooked together47 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Raisin + sugartop 13% of all pairsSmell alikemoderateCooked together12,481 recipes
Shared aroma: beta-damascenone (apple, rose).
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Raisin + lemontop 14% of all pairsSmell alikemoderateCooked together3,742 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 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
- Rhubarb
- Provides the tart flavor and bulk that forms the body of the filling.
- Sugar
- Sweetens the filling and helps draw out juice from the rhubarb as it cooks.
- Egg yolks
- Thicken the filling and add richness when stirred into the cooked mixture.
- Raisins
- Add concentrated sweetness and chewy texture throughout the filling.
The step that matters
Stir in the egg yolks off the heat. Egg yolks thicken by coagulating when heated. Adding them to a hot mixture off the heat, then mixing well, helps keep them smooth rather than scrambled in lumps.
Swap the rhubarb
How well each one fits the dish's main ingredients (raisin, sugar, lemon, egg):
- Cinnamonfits better
- Nutmegfits better
- Gingerfits about as well
- Rhubarbthe original
Fit is the average pairing score against raisin, sugar, lemon, 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.
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