Steps
1. In a small saucepan, melt half the butter over medium heat.
2. Add the finely chopped shallot and sauté until translucent, about 2 minutes.
3. Pour in the red wine and bring to a simmer, reducing it by half.
4. Add the stock and continue to simmer until the sauce thickens and reduces to about 1/4 cup.
5. Stir in the Dijon mustard and the remaining butter until the sauce is glossy and smooth.
6. Season with salt and freshly ground black pepper to taste.
7. Drizzle the sauce over your cooked pork steak and serve immediately.