Chicken Kosha/Bengali style Spicy Chicken Curry

Name: Chicken Kosha/Bengali style Spicy Chicken Curry
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: Indian
Ingredients: 1 kg- Chicken ((medium sized pieces, with bone)); 4- Potato (medium sized); 3/4 tsp- Garlic paste; 6-7- Garlic cloves ((peel and keep the cloves whole)); 4- Onion ((thinly sliced)); 1- Tomato ((roughly chopped)); 1- Bay leaf; 1-2- Whole dry red chilli; ¾ tsp- Black peppercorn powder; Salt to taste; 1/2 tsp- Sugar; Mustard oil; 6-7- Green chillies ((adjust as per your tolerance)); 1 tsp- Kashmiri Mirch Powder; 1/2 tsp- Turmeric powder; 1/4 tsp- Garam masala powder; 1 tsp- Ginger paste; 1 tsp- Cumin powder; 1 tbsp- Coriander powder; 4-5- Green cardamoms ((roughly crushed)); 1/2 tsp- Lemon juice