Reshmi Seekh Kebab

Name: Reshmi Seekh Kebab
Ingredients: 2 lb chicken thighs; 200 grams beef or mutton fat (or 10% of the chicken weight); 4 tsp ground coriander; 3 tsp ground cumin; 1/2 tsp garam masala; 1/4 tsp nutmeg; 1/4 tsp allspice (this is ground allspice berries also called Pimento, not to be confused with allspice blend); 1/4-1/2 tsp red chili powder (increase to 1 tsp if you can handle the heat); 1/2 tsp black pepper; 1 tsp salt; 1 green chili; 1/2-3/4 red onion; 5-6 garlic cloves; 1 thumb-sized piece of ginger; 1/2 cup coriander leaves; 1/4 cup mozzarella cheese; 2-4 tbsp heavy cream