Why it works: Rhubarb and flour match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 670 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Rhubarb 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
Line a pie pan with the crust.
Fill the pan with the sliced rhubarb.
In a bowl, mix the sugar, egg, and flour until smooth.
Pour the mixture evenly over the rhubarb.
Bake
Cover with the top crust and bake at 350°F (175°C) until golden brown.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Rhubarb + flourtop 7% of all pairsSmell alikestrongCooked together670 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
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).
-
Rhubarb + sugartop 18% of all pairsSmell alikemoderateCooked together1,852 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
-
Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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 the bulk of the filling's moisture as it cooks.
- Sugar
- Sweetens the filling and balances the sharp acidity of the rhubarb.
- Egg
- Helps the filling set into a sliceable custard-like texture as it bakes.
- Flour
- Thickens the juices released by the rhubarb so the filling does not run.
The step that matters
Pour the mixture evenly over the rhubarb. An even layer of the sugar, egg and flour mixture lets the filling set uniformly. Uneven pouring can leave soggy or runny patches where the thickener is too concentrated or missing.
Swap the rhubarb
How well each one fits the dish's main ingredients (sugar, egg, flour):
- Jalapenofits better
- Cinnamonfits better
- Nutmegfits better
- Rhubarbthe original
Fit is the average pairing score against sugar, egg, flour. 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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