Why it works: Truffle and mushroom are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 1,900 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓
Vol-au-vents
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the pastry
Divide the butter into four parts.
Rub three-quarters of the butter into the flour, mixing with a little water to form a dough.
Roll out the dough.
Layer the remaining butter over the dough.
Fold and roll again, repeating with the last two quarters of butter.
Chill the dough for one hour.
Roll and cut the dough into four parts, shaping one-third for the top and two-thirds for the bottom of the vol-au-vent.
Cut the pieces into an oval shape.
Use leftover dough to create flower and leaf shapes for garnish.
Cut out the center of the top piece.
Fill the center with the pastry flowers and leaves.
Bake in a hot oven at 400°F (200°C) for 30 minutes until puffed and golden.
Make the filling
Remove the flowered center and hollow out the crust.
In a saucepan, make a sauce by rubbing together one tablespoon of butter and one tablespoon of flour.
Boil the milk and cream, then mix with the butter and flour to create a rich sauce.
Add the sweetbreads, truffles, mushrooms, nutmeg, white pepper, and salt to the sauce.
Stir and boil for twenty minutes.
Fill the hollow pastry with the mixture and serve hot.
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.
-
Truffle + mushroomtop 4% of all pairsSmell alikemoderateCooked together1,900 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Layered through the dough to create flaky, separated pastry layers as it bakes.
- Flour
- Forms the dough structure and thickens the sauce with the butter.
- Sweetbreads
- Provide the tender, rich meat that forms the main body of the filling.
- Truffles
- Add a strong, earthy aroma to the creamy filling.
- Cream
- Adds richness and a smooth, velvety texture to the sauce.
The step that matters
Chilling and laminating the dough. Keeping the butter cold between folds creates separate layers; if it softens into the dough, the pastry will not puff well in the oven.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Mushroom Soup60 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes