INGREDIENTS
8 oz
Shallots
1 cup
Beef or chicken stock, homemade
2 tbsp
Balsamic vinegar
1 tbsp
Dijon mustard
2 tsp
Mustard, grainy
1 tsp
Pepper, freshly ground
2 tsp
Salt, coarse
1 tbsp
Olive oil
2 tbsp
Butter, unsalted
1 1/2 pounds beef tenderloin, trimmed and tied