Name: To Dress Salt Cod or Linq
Ingredients: Salt cod or linq; water; 1 glass vinegar; parsneps; 1 cup cream; 4 tablespoons butter; 2 tablespoons flour; white pepper; ½ teaspoon mustard

Why it works: Vinegar and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

To Dress Salt Cod or Linq

Ingredients

Directions

Prepare the fish

Soak the salt cod or ling 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 mash them in a mortar.
In a saucepan, combine the mashed parsnips, cream, butter, flour, white pepper, and mustard; heat until warm but do not boil.

Serve

Pour the sauce over the fish and serve.

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.

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).
Flour + mustardtop 13% of all pairs

Smell alikemoderate

Cooked together5,066 recipes

Shared aroma: isobutyraldehyde (malty, green).
Vinegar + white peppertop 20% of all pairs

Smell alikelow

Cooked together1,154 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: Forms the main body of the dish as flaky, savoury fish.
Parsnips (in the method): Mashed into the sauce, adding body, natural sweetness and a smooth texture.
Cream: Adds richness and moisture, giving the sauce a smooth, silky texture.
Butter: Adds fat for richness and smoothness in the sauce.
Flour: Thickens the sauce so it holds together rather than running thin.

The step that matters

Heat the sauce without boiling. Once flour is stirred into cream, boiling can cause it to thicken unevenly or separate, leaving a grainy or lumpy sauce. Gentle warming keeps it smooth and cohesive.

Swap the white pepper

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

Capersfits better
Tarragonfits better
Nutmegfits better
White pepperthe original

Fit is the average pairing score against vinegar, 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.

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To Dress Salt Cod or Linq