For the Au Jus:
- 4 cups beef stock
- 1 tablespoon sherry wine
- 1 tablespoon Worcestershire sauce
- 1 teaspoon kosher salt
- 2 teaspoons garlic powder
- 2 teaspoons onion powder
- 1 sprig fresh thyme
For the French Dip Sandwiches:
- 1½ pounds skirt steak, cut in half
- 1 tablespoon olive oil
- 1 teaspoon kosher salt
- 1 teaspoon black pepper, coarse ground
- 4 hoagies, (like pao de sal) sliced in half
- 4 tablespoons butter
- 2 teaspoons garlic powder
- 4 slices cheese