Loosely based on this Cut 1.5lbs of Salmon into large (2") cubes, and sprinkle with 1tsp salt and 1tbsp turmeric . Mix it all up till well coated. ( If you use your hands, you'll end up with yellow stains from the tumeric! ) Let this sit in the fridge while you get the gravy done. Use a mixer to grind 3 tbsp mustard seeds 1 tbsp cumin seeds 1 tsp poppy seeds 4 green chillies (serrano should work, but thai are better) 1/4 cup water 1/2 tsp salt You might need to add a little more water to get the whole thing ground into a somewhat fine paste. This is your spice mix ( If you have an Indian "mixie" or a "magic bullet", use it, otherwise, well, use a large mortar and pestle, and good luck) Heat 1/4 cup mustard oil in a pan, and add 1tsp onion seeds. Let it heat up till it starts sputtering - around 30 seconds at med-hi. Add the spice mix , 1tsp turmeric , and 1tsp red chili powder . Stir fairly vigorously for abou