Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Asparagus Rolls
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the rolls
Cut off the top of each roll.
Carefully remove the crumb.
Place the hollowed rolls and their tops in a 300°F (150°C) oven to dry until crisp.
Prepare the asparagus
Boil the asparagus for 20 minutes.
Cut off the green tops of the asparagus.
Let the asparagus cool completely.
Make the filling
Heat the milk.
Stir in the butter.
Pour the mixture over the beaten egg yolks.
Whisk the mixture for one minute.
Return the mixture to the heat.
Add minced asparagus tops.
Stir until hot but not boiling.
Assemble and serve
Fill the rolls with the mixture.
Create a round hole in the top of each crust cover.
Insert a whole asparagus top into each hole.
Place the cover back on the roll.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Asparagus + peppertop 10% of all pairsSmell alikemoderateCooked together1,968 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Asparagus + flourtop 12% of all pairsSmell alikemoderateCooked together936 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Egg yolks
- Thicken the milk mixture into a smooth, creamy filling as they gently set with heat.
- Milk
- Forms the liquid base of the custard filling, carrying the egg yolks and butter.
- Asparagus
- Provides the main flavour and the green filling and garnish of the rolls.
- Stale french rolls
- Form the edible containers; their dry, crisp structure holds the filling.
The step that matters
Stir in the hot but not boiling. Egg yolks thicken the custard as they heat, but if the mixture boils they can curdle and turn grainy. Heating gently and stirring keeps it smooth and creamy.
Swap the asparagus
How well each one fits the dish's main ingredients (egg, milk, butter, flour, pepper):
- Capsicumfits about as well
- Potatofits about as well
- Asparagusthe original
- Chivefits about as well
Fit is the average pairing score against egg, milk, butter, flour, 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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