In a large skillet over medium heat, cook the ground beef and onion until beef is no longer pink, about 6-8 minutes. Drain the excess grease off.1 pound ground beef,1 medium onion.
Add the minced garlic to the skillet. Cook an additional 30-45 seconds until the garlic is fragrant.3 cloves garlic.
Stir in the Worcestershire sauce, mustard, apple cider vinegar, paprika, salt, and pepper. Cook for an additional 2 minutes.2 teaspoons Worcestershire sauce,2 teaspoons yellow mustard,2 teaspoons apple cider vinegar,1/2 teaspoon paprika,1/2 teaspoon salt,1/8 teaspoon black pepper.
Pour in the beef broth and simmer the mixture, stirring occasionally, until most of the liquid has evaporated, around 5-7 minutes.1/3 cup beef broth.
Taste and adjust the seasoning as needed.
Serve the loose meat on hamburger buns.4 hamburger buns.
Notes
Pro Tip: Don't rush the simmer. Let the broth cook down until it's almost gone, that's what concentrates the flavor and keeps the meat juicy without making it soggy on the bun.