Bistro Burgers Recipe

Ingredients For Bistro Burgers Recipe

• 0.33000000000000007 cup Mayonnaise
• 3 tablespoon Dijon mustard
• 2 tablespoon Freshly grated horseradish
• Kosher salt and freshly ground pepper
• 1.5 pound Ground beef
• 4 Brioche buns, split
• Vegetable oil, for drizzling and grill
• 0.5 inch 1 large sweet onion, such as vidalia, sliced into thick rounds
• 2 tablespoon Worcestershire sauce
• 4 Slices sharp white cheddar
• 2 Beefsteak tomatoes, sliced into thick rounds
• Flaky sea salt, such as jacobsen
• Mixed greens, such as watercress and chopped radicchio, and cornichons, for serving