Indian style mutton stew

Name: Indian style mutton stew
Ingredients: 600 gm mutton; 400 gm potatoes cubed; 300 gm carrots cubed; 50 gm beans pieced; 25 gm lentils; 200 gm onion chopped; 12 cloves garlic chopped; 2 inch ginger finely chopped; 8 green chillies chopped; 2 tsp black pepper powder; 1/2 tsp turmeric powder; 2 tsp cumin; 1 tsp Shahi Garam Masala powder; 2 tsp curry powder; 1 tsp cumin powder; 2 bay leaves; 1/2 tsp mace; 1/2 tsp nutmeg powder; 1 tsp vinegar; 100 ml sunflower oil; to taste Salt; to taste Sugar