In pan add 1/2 cup water and 1/2 tbsp turmeric ,heat it .Add chopped cabbage and potato cubes and cover with a lid.Cook for 5-7 minute till they are almost done.
Marinate fish head with salt and 1/2 tbsp turmeric powder for 5 min.Heat oil on a skillet.Fry Fish head both side till they turn golden brown and crispy.You can also deep fry it. Take it out .
In the same pan add bay leaf ,chopped onion and fry till light brown .
Make a coarse paste of ginger,garlic,green chili and cumin seeds.Add this paste and fry for 2-3 min .
Break fish head with hand and add this to pan along with chili powder.Fry for a minute.
Add steamed cabbage and potato ,saute for another 5 min.Season with salt and cover the pan with lid. Cook for another 2 minutes at medium flame.
Make paste of cinnamon powder with little water and add this to cabbage and mix well.cook for 2 minute and serve hot with steam rice & dal.