Name: To Dress Salt Cod or Ling
Ingredients: salt cod or ling; water; ½ cup vinegar; parsneps (parsnips); 1 cup cream; 4 tablespoons butter; 2 tablespoons flour; ¼ teaspoon white pepper; ½ teaspoon mustard

Why it works: Parsnip and mustard share more aroma than cooks usually use. They rank in the top 6% of all ingredient pairs, and cooks put them together in 89 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

To Dress Salt Cod or Ling

Ingredients

Directions

Prepare the fish

Soak and clean the fish, then lay it in water with vinegar overnight.
Boil the fish until cooked, then break it into flakes on a serving dish.

Make the sauce

Boil the parsnips, then beat them in a mortar.
In a saucepan, combine the beaten parsnips, cream, butter, flour, white pepper, and mustard; boil together.

Serve

Pour the sauce over the fish and serve hot.

Recipe from a historical cookbook (Internet Archive).

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 + mustardtop 6% of all pairs

Smell alikestrong

Cooked together89 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Parsnip + flourtop 7% of all pairs

Smell alikestrong

Cooked together669 recipes

Shared aroma: isobutyraldehyde (malty, green).
Vinegar + mustardtop 7% of all pairs

Smell alikemoderate

Cooked together14,067 recipes

Shared aroma: isobutyraldehyde (malty, green).
Cream + buttertop 8% of all pairs

Smell alikemoderate

Cooked together41,516 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked 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

Salt cod or ling: Is the main protein, flaked into the dish after soaking and cooking.
Parsnips: Provide the bulk and body of the sauce once boiled and beaten smooth.
Cream: Adds richness and a smooth, silky texture to the sauce.
Butter: Adds fat and flavour, helping the sauce feel rich and glossy.
Flour: Thickens the sauce as it boils, giving it a coating consistency.

The step that matters

Boil the sauce after combining. Once flour is mixed into the cream and parsnips, boiling is needed to cook out the raw starch taste and fully thicken the sauce. Stirring helps prevent lumps from forming.

Swap the white pepper

How well each one fits the dish's main ingredients (vinegar, parsnip, cream, butter, flour, mustard):

Capersfits better
Tarragonfits better
Nutmegfits better
White pepperthe original

Fit is the average pairing score against vinegar, parsnip, cream, butter, flour, mustard. 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.

Parsnip Cakes12 recipes

Tomato Soup526 recipes

Brown Bread461 recipes

Mutton Broth292 recipes

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To Dress Salt Cod or Ling