Pakistani Seekh Kebab Burger

Name: Pakistani Seekh Kebab Burger
Ingredients: 500 grams minced lamb or beef (Choose grass-fed for richer flavor); 1 medium onion, finely grated (Yellow or white variety); 2 cloves garlic, minced (Fresh and fragrant); 1 inch fresh ginger, finely grated (About one tablespoon); 1 tablespoon ground cumin (Freshly ground if possible); 1 tablespoon ground coriander (Adds citrusy depth); 1 teaspoon red chili flakes (Adjust to taste for spice); 1 teaspoon salt (Himalayan pink salt recommended); 1 handful fresh coriander leaves, chopped (Roughly chopped); 4 pieces burger buns (Soft brioche recommended); 4 tablespoons yogurt mint sauce (For garnish); 1 cup mixed salad greens (For freshness)