Shake Shack Smash Burger - The Grill Dads

Ingredients

• 2 tbsp dill pickle (finely diced)
• 1/2 cup mayo
• 1 tbsp ketchup
• 1 tbsp yellow mustard
• 1/4 tsp paprika
• 1/4 tsp garlic powder
• 1/8 tsp cayenne pepper
• Kosher salt (for seasoning)
• Black pepper (for seasoning)
• 8 oz beef sirloin (trimmed of gristle and cut into 1 inch cubes)
• 4 oz well marbled beef chuck (trimmed of gristle and cut into 1 inch cubes)
• 4 oz boneless short rib (trimmed of gristle and cut into 1 inch cubes)
• 1 oz dry aged beef fat (cut into 1/4 inch cubes)
• 8 burger buns
• 8 slices American cheese
• 1 small head of iceberg lettuce
• 16 center-cut slices ripe plum tomato
• 4 tbsp unsalted butter