Chef John'S Beef On Weck Sandwiches

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

1. Season beef with salt and black pepper.
2. Heat oil in a large skillet over medium-high heat. Cook beef roast in hot oil until browned on all sides on each side, 4 to 5 minutes per side. An instant-read thermometer inserted into the center should read 125 degrees F (52 degrees C). Transfer beef to a plate to rest.
3. Remove skillet from heat and whisk flour into skillet until flour taste cooks off, about 1 minute. Pour cold beef broth into skillet; place skillet over medium-high heat. Stir balsamic vinegar, black pepper, and any accumulated juices from the roast beef plate into beef broth mixture; cook until jus reduces slightly, about 5 minutes. Season with salt.
4. Slice sirloin as thinly as possible against the grain. Pile meat onto the base of each roll. Spread a thick layer of horseradish on the top bun and place top bun over meat. Serve with jus for dipping.

beef topsirloin, salt, vegetable oil, flour, cold beef broth, aged balsamic vinegar, dinner rolls, extrahot prepared horseradish

Taken from www.allrecipes.com/recipe/240135/chef-johns-beef-on-weck-sandwiches/ (may not work)