Mustard Sauce for Fish

READY IN: 15mins
Recipe by mollypaul

From The United States Regional Cookbook, Culinary Institute of Chicago, 1947.

Top Review by Tanya Pants

This was really tasty - it makes a LOT of sauce. I only used 1 cup of chicken stock and still had plenty left over (we poured it over grilled salmon and roasted potatoes). Delicious! Thanks, Molly5!

Ingredients Nutrition

  • 2 tablespoons butter (no substitutions)
  • 3 tablespoons flour
  • 12 teaspoon salt (if fish stock is salty, you might want to reduce or omit salt)
  • 1 dash black pepper
  • 3 cups fish stock (sub chicken stock if you don't have fish stock)
  • 2 tablespoons prepared mustard (dijon is very nice, but any prepared mustard will do)


  1. Melt 1 1/2 tablespoons butter in a saucepan; blend in flour and seasonings.
  2. Add fish stock gradually, stirring constantly until thickened then cook an additional three minutes.
  3. Add mustard and remaining butter.
  4. Serve with boiled lutfisk, haddock or cod.

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