Why it works: Mushroom and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Mushroom Tartlets
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the filling
Peel, wash, and cut mushrooms into small pieces. Finely chop the onion.
Melt butter in a frying pan, then fry mushrooms and onion together, adding pepper and salt to taste.
Stir in vermicelli and cook until tender in the mushroom juice.
Let the mixture cool.
Assemble and bake
Line tartlet tins with wholemeal crust.
Fill tins with mushroom mixture, cover with more crust, and press edges together.
Bake in a moderate oven at 350°F (175°C) until golden.
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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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mushrooms
- Provide the main filling bulk and savoury flavour once they soften and release their juice.
- Butter
- Carries the frying and adds richness and browning to the mushrooms and onion.
- Vermicelli
- Cooks in the mushroom juice to thicken and bind the filling.
- Allinson wholemeal crust
- Forms the tartlet case and top that holds the filling while baking.
The step that matters
Cooking the mushrooms until tender in their juice. Mushrooms release a lot of water, and cooking them long enough lets that liquid evaporate and concentrate the flavour. If the filling stays wet, the pastry can turn soggy and the filling can run when baked.
Swap the onion
How well each one fits the dish's main ingredients (mushroom, butter, pepper):
- Capsicumfits better
- Shallotfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against mushroom, butter, pepper. 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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