Dry roast the dals and when golden brown add the flax seeds also. When done, the flax seeds will start popping. Allow these to cool on a plate. Dry roast sesame seeds till they start popping and add to the flax seeds. Roast the chillies and add them to the flax seed mix also. When cool, grind all the ingredients together along with salt, sugar and asafoetida.
I normally use byadagi dried chillies (from Karnataka) for colour and the round dried chillies for the spice. So I tend to use a combination of these two in my cooking.
Store the flaxseed milagai podi in cool and dry place. Mine is stored in the fridge. Use like regular milagai podi for dosai, idli and adai.