INGREDIENTS
1 tbsp
unsalted butter
1/2 tbsp
extra-virgin olive oil
4
beef tenderloin medallions, pounded 3/4 inch thick
Kosher salt and freshly ground pepper
1
small shallot, minced
1
garlic clove, minced
1/4 lb
button mushrooms, sliced 1/4 inch thick
1/4 cup
Cognac or other brandy
2 tsp
Dijon mustard
1/4 cup
heavy cream
1/4 cup
veal demiglace (see Note)
2 tsp
Worcestershire sauce
1 tbsp
finely chopped scallions
1 tsp
finely chopped flat-leaf parsley
Hot sauce, such as Tabasco