Mild turmeric chicken curry

Name: Mild turmeric chicken curry
Cuisine: Indian
Ingredients: 4 skinless boneless chicken breasts; ½ inch piece of ginger; 3 green chilies (Use less or skip if you want the curry to be just creamy without any heat); 10 curry leaves; 1 tsp cumin powder; 1 tsp turmeric powder; ½ tsp mustard seeds; ¼ tsp fenugreek seeds; 2 cloves of garlic; ½ small onion; 2 cups thick coconut milk; 1 inch Stick of Cinnamon; 1 pod cardamom; 1 tsp freshly crushed black pepper; 2 tsp salt (or to taste )