Why it works: Carrot and parsnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,097 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
White Sauce
Ingredients
Directions
Make the roux
Melt the butter in a saucepan over low heat.
Gradually mix in the flour with a wooden spoon until smooth.
Slowly add the cold stock, stirring continuously until the mixture is a pale, sherry-colored paste.
Set aside to cool.
Make the stock
In another saucepan, combine the uncooked trimmings, water or stock, ham, veal cutlet, and optional fowl or rabbit legs.
Add the chopped carrot, parsnip, onions, celery, turnip, mushrooms, shallot, bay leaf, thyme, and parsley.
Optionally, brown the mixture in butter for added flavor.
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.
-
Carrot + parsniptop 1% of all pairsSmell alikestrongCooked together1,097 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + parsniptop 7% of all pairsSmell alikestrongCooked together669 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Parsnip + oniontop 9% of all pairsSmell alikestrongCooked together1,054 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Butter
- Carries flavor and richness, and forms the fat base of the roux with the flour.
- Flour
- Thickens the sauce when cooked with the butter, giving it body and a smooth texture.
- Veal cutlet
- Adds meaty savoriness to the stock that flavors the finished sauce.
The step that matters
Adding the cold stock to the roux. Cold liquid added slowly while stirring constantly lets the flour starch disperse evenly before it swells. Adding it all at once or too fast creates lumps that are hard to smooth out.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, veal, ham, rabbit, carrot, parsnip):
- Leekfits better
- Turnipfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against butter, flour, veal, ham, rabbit, carrot, parsnip. 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.
More white sauce recipes
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.
Carrot Soup134 recipes
Cream of Celery Soup113 recipes
Mushroom Soup60 recipes
Veal Patties50 recipes