
1 pound 80%-lean ground beef
2 tablespoons Worcestershire sauce
1 tablespoon steak-and-burger seasoning
½ teaspoon garlic powder
¼ teaspoon onion powder
¼ teaspoon dried oregano leaves
¼ cup olive oil mayonnaise dressing
1 tablespoon prepared horseradish
1 teaspoon red onion and herbs pickling brine,
½ teaspoon stone-ground Dijon mustard
½ cup tightly packed fresh arugula
½ teaspoon olive oil
1 tablespoon lemon zest
¼ teaspoon coarse kosher salt
¼ teaspoon coarse-ground black pepper
4 large brioche burger buns, split
½ cup Quick-Pickled Red Onions and Herbs, drained