Cook the channa dal( in a pressure cooker) adding just enough water to cook until almost done. (Not mashed or paste). On touching the cooked dal/lentil/parippu it should break into grainy powder.
Drain off excess water if any and immediately add the jaggery to hot dal /parippu (do not put on heat) Simply mix well until cool.(the heat from the dal is enough to melt the jaggery)Grind it in a mixee to fine smooth paste.
Take a heavy bottom pan and pour the mixture add the dry spices powdered earlier and heat until it thickens stirring constantly (this will take only a minute or two) to a thick dough consistency to shape into a ball. When it cools divide the dough into equal portions and make ball out of it.
Meanwhile make the outer covering by mixing maida,turmeric powder and salt add water and make a smooth sticky dough add sesame oil on top and let it rest for say half an hour **while the filling is made.
Dip fingers in water take a small ball of the maida dough (just enough to cover the filling)spread the dough in the palm of ur hand keep the filling inside, cover the filling entirely with dough put it into the rice flour roll for dusting once then roll it into disc as thin as possible. Dip fingers in water only if the dough is too sticky.
Use rice flour to prevent the disc from sticking on to the surface. Heat (medium to high) a tawa and cook boli one side when it puffs slightly turn cook for few seconds apply ghee on just this side and transfer onto a butter paper to cool with ghee side on top.Store in a airtight container for two days in room temperature.Or it can be stored up to a week in the fridge. Kerala Boli can be served with plain milk, coconut milk or milk or vermicilli kheer/payasam, paal ada pradhaman.