Beef Tikka Masala

Name: Beef Tikka Masala
Prep time: 10 min
Cook time: 1 h
Total time: 1 h 10 min
Cuisine: Asian, Indian
Ingredients: 2 lbs stewing beef (about 1 kg) ( cut into bite-sized pieces); ⅓ cup vegetable cooking oil; 2 Tbsp ginger-garlic paste; 1 Tbsp ground cumin; 1 Tbsp ground coriander; 1 tsp ground turmeric; 1 tsp garam masala; 1 tsp Kashmiri chili powder ((see notes below)); 1 tsp salt; 4-6 Tbsp vegetable cooking oil; 3-4 bay leaves; 2 cinnamon sticks; 5-6 cardamom pods; 1 large onion (finely sliced); ½ tsp ground turmeric; ½ tsp ground cumin; ½ tsp ground coriander; 3-8 freshly sliced chilis (use more or less, as preferred); 2 large tomatoes (finely sliced); 1 14oz (400ml) can coconut milk; some warm water ((optional -see notes)); a few leaves of chopped fresh coriander (to garnish)