Parsley Mustard Sauce for Corned Beef

Ingredients

• 2 tablespoons butter
• 2 teaspoons finely chopped yellow onions
• 2 tablespoons flour
• 3/4 cup milk
• 3/4 cup beef stock (or cooking liquid from corned beef)
• 1 tablespoon chopped fresh parsley
• 1 teaspoon hot English mustard
• 1/8 teaspoon nutmeg
• salt & freshly ground black pepper

Directions

1. 1

   Melt butter in a small saucepan over medium heat.

2. 2

   Add onions and cook until just softened, about 1 minute.

3. 3

   Whisk in flour and cook until light golden, about 1 minute.

4. 4

   Whisk in beef stock, milk, parsley, mustard, and nutmeg and whisk until smooth.

5. 5

   Season to taste with salt and pepper and cook, whisking, until thickened, 4–5 minutes.