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 ↓
Rhubarb Pie, with Custard
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the rhubarb
Remove the skin from the rhubarb, reducing the weight to about 3½ pounds, and cut it into 1‑inch pieces.
If thick, split the sticks lengthwise.
Assemble and bake
Line a pie dish with the suet crust, place a small cup in the center, add the rhubarb, scatter a few pieces of lemon peel, and cover with more crust.
Bake in a 400 °F (200 °C) oven for 45 minutes.
Make the custard and serve
Prepare 1 pint of rich custard using custard powder.
Sweeten the custard to taste with either moist sugar or finely powdered loaf sugar.
Pour it over the pie before serving.
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.
-
Rhubarb + lemontop 7% of all pairsSmell alikestrongCooked together546 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Rhubarb + sugartop 18% of all pairsSmell alikemoderateCooked together1,852 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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
- Rhubarb
- Provides the tart flavour and the bulk of the filling that cooks down under the crust.
- Suet crust
- Forms the sealed pastry that holds the filling in and bakes into a rich, sturdy casing.
- Custard
- Adds a smooth, creamy sauce that contrasts with the tart, cooked fruit.
- Sugar
- Sweetens the custard to balance the sharpness of the rhubarb.
The step that matters
Bake in a 400 °F (200 °C) oven for 45 minutes. Rhubarb releases a lot of liquid as it cooks. The pie needs enough time for the crust to brown and the filling to soften, so the bottom is not soggy.
Swap the rhubarb
How well each one fits the dish's main ingredients (lemon, sugar):
- Cinnamonfits better
- Gingerfits better
- Marjoramfits better
- Rhubarbthe original
Fit is the average pairing score against lemon, sugar. 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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