Why it works: Parsnip and leek match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 165 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Fish Cullis
Ingredients
Directions
Prepare the fish paste
Pound the fish flesh, egg yolks, and almonds together in a mortar with some butter.
Make the cullis
In a stewpan, melt butter and brown the sliced onions, parsnips, and carrots.
Add a little stock to moisten the vegetables and cook for a few minutes.
Strain the mixture into another saucepan and add leek, parsley, basil, cloves, mushrooms, truffles, and bread crumbs.
Stew gently for 15 minutes, then add the fish mixture from the mortar.
Let it stew longer without boiling, then strain through a fine sieve.
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.
-
Parsnip + leektop 1% of all pairsSmell alikestrongCooked together165 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsnip + carrottop 1% of all pairsSmell alikestrongCooked together1,097 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Parsnip + parsleytop 1% of all pairsSmell alikestrongCooked together484 recipes
Shared aroma: myristicin (spice, warm).
-
Carrot + leektop 3% of all pairsSmell alikestrongCooked together1,310 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pike
- Forms the main body of the cullis, giving it a soft, savoury base once pounded and cooked.
- Hard-boiled eggs
- Egg yolks add richness and help bind the pounded fish into a smooth paste.
- Onions
- Browned in butter, they add sweetness and deep savoury flavour to the base.
- Carrots
- Browned with the onions, they add sweetness and body to the vegetable base.
- Parsnips
- Browned with the onions, they add sweetness and body to the vegetable base.
- Mushrooms
- Add earthy savoury flavour and aroma to the finished cullis.
The step that matters
Stew without boiling, then strain. Boiling a fish and egg mixture can cause proteins to tighten and curdle, leaving a grainy texture. Gentle heat keeps it smooth before the fine sieve removes remaining solids.
Swap the almond
How well each one fits the dish's main ingredients (egg, butter, onion, parsnip, carrot, leek, parsley):
- Lentilsfits better
- Beansfits better
- Chickpeafits better
- Almondthe original
Fit is the average pairing score against egg, butter, onion, parsnip, carrot, leek, parsley. 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.
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.
Brown Bread461 recipes
Carrot Soup134 recipes
White Bread80 recipes
Almond Soup60 recipes