Soak the lentils and beans together overnight. If you are upto it, you can sprout them as well.
Drain and rinse them well.
Place them in a pressure cooker along with required salt, with enough water to cover it.
Cook until soft but not mushy. I think I took 6-7 whistles - around 12-15min. Set aside.
While that was cooking, alternatively prepare the spice powder. Dry roast them in a pan until aromatic and slightly reddish brown. You can add some ghee/oil to roast as well.
Cool it slightly and add it to your spice blender. I use a coffee bean grinder and its perfect for all my spice powders.
Grind into smooth powder. You possibly will have extra. You can store and use them for other sundals or on your vegetables. Set aside.
In the same pan used for dry roasting, add a little ghee/virgin coconut oil (for a profound coconut flavor) and temper the ingredients - mustard goes in first. And when it pops add the remaining.
Add the boiled legumes,
followed by coconut, if using.
Last goes in the spice powder. Add as much or as little as you prefer. Toss to mix.