Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
A Pie of Sweet-bread and Oysters
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Boil the sweetbreads until tender.
Season the sweetbreads with pepper and coarse sea salt.
Make a gravy by adding ½ cup butter, 2 egg yolks, and 1 tablespoon flour to the boiling water.
Line a dish with puff pastry.
Assemble and bake
Layer oysters in the dish, followed by the sweetbreads, and pour in the gravy.
Cover with a top crust of puff pastry and bake at 300 °F (150 °C) until done.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + oystertop 12% of all pairsSmell alikemoderateCooked together8,184 recipes
Shared aroma: 2,6-nonadienal (cucumber, green).
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Egg + oystertop 14% of all pairsSmell alikemoderateCooked together4,103 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Sweetbreads
- Provide the tender, rich meat that forms the body of the filling.
- Butter
- Adds fat and richness to the gravy, carrying flavour and smoothness.
- Egg yolks
- Enrich and thicken the gravy as they set with gentle heat.
- Flour
- Thickens the gravy so it binds the filling rather than running out.
- Oysters
- Add briny, savoury flavour to the filling.
- Puff pastry
- Forms a flaky, buttery crust that browns in the oven.
The step that matters
Make the gravy with the egg yolks. Egg yolks thicken when heated gently but can scramble if the liquid is at a hard boil. Adding them to boiling water as written risks curdling, so keep the heat lower for a smooth, thickened gravy.
“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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