Steak Diane | Dinners | Umami

Ingredients

• Two 6- to 8-ounce center-cut filets mignon, 1 1/2 to 2 inches thick, trimmed (see notes)
• Kosher salt and freshly ground black pepper
• 1 tablespoon (15ml) neutral oil such as canola or vegetable oil
• 4 tablespoons (56g) unsalted butter, cut into 4 pieces, divided
• 1/2 medium shallot (about 1 1/2 ounces; 42g), minced
• 3/4 cup (180ml) homemade beef stock or homemade chicken stock or store-bought low-sodium chicken broth (see notes)
• 1 teaspoon powdered gelatin, if using store-bought broth (see notes)
• 1/4 cup (60ml) cognac
• 2 teaspoons (10ml) Worcestershire sauce
• 1 tablespoon minced fresh chives
• 1 teaspoon Dijon mustard