Chef John's Beef on Weck Sandwiches

Beef Sirloin Sandwich with Jus

Ingredients:

• 2 pounds beef top-sirloin roast
• Salt and pepper to taste
• 1 tablespoon vegetable oil
• 2 teaspoons all-purpose flour, or as needed
• 2 cups cold beef broth
• 2 teaspoons aged balsamic vinegar, or to taste
• 4 kummelweck dinner rolls, split
• cup extra-hot prepared horseradish, or to taste

Directions:

1. Season the beef with salt and pepper to taste.
2. Heat vegetable oil in a large skillet over medium-high heat.
3. Place the beef roast in the hot skillet and cook until browned on all sides. This should take about 4 to 5 minutes per side. To ensure the beef is cooked to perfection, insert an instant-read thermometer into the center of the roast; it should read 125F (52C) for medium-rare. Once done, transfer the beef to a plate and set aside to rest.
4. Remove the skillet from the heat and whisk in the flour. Cook for about 1 minute to eliminate the raw flour taste.
5. Pour the cold beef broth into the skillet and return the pan to medium-high heat. Stir in balsamic vinegar, black pepper, and any juices that have accumulated on the plate with the beef. Let the mixture cook for about 5 minutes, or until it reduces slightly.
6. Season the jus with salt to taste.
7. Thinly slice the sirloin against the grain.
8. Place a generous pile of the sliced beef onto the bottom half of each kummelweck roll.
9. Spread a thick layer of horseradish on the top half of the roll and place it over the beef to assemble the sandwich.
10. Serve the sandwich with the jus on the side for dipping.

Chef's Notes:

Although different cuts of beef, such as top round, rump roast, or brisket, can be used for this sandwich, I recommend using a thick, juicy top-sirloin roast. I prefer pan-roasting it on the stove instead of oven-roasting since it cooks faster and stays tender. The shape of the top sirloin roast makes it easy to slice thinly, which is key to making this sandwich melt-in-your-mouth delicious.

If youre feeling adventurous, try making your own caraway rolls with Chef John's Kummelweck recipe for an extra touch of flavor.

Nutrition Facts (per serving):

• Calories: 388
• Total Fat: 14g (17% Daily Value)
• Saturated Fat: 4g (21% Daily Value)
• Cholesterol: 79mg (26% Daily Value)
• Sodium: 817mg (36% Daily Value)
• Total Carbohydrate: 18g (7% Daily Value)
• Dietary Fiber: 1g (4% Daily Value)
• Total Sugars: 3g
• Protein: 46g (92% Daily Value)
• Vitamin C: 4mg (4% Daily Value)
• Calcium: 96mg (7% Daily Value)
• Iron: 4mg (23% Daily Value)
• Potassium: 689mg (15% Daily Value)

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.