sentence: heat the oil in a pan sentence: add mustard seeds and urad dal channa dal sentence: add in the ginger onions curry leaves green chillies and asafoetida sentence: stir the contents of the pan sentence: add in the turmeric powder salt and potatoes sentence: stir the ingredients sentence: mash the potatoes sentence: spread batter on the skillet sentence: pour a teaspoon of oil or ghee around the edges sentence: cook until the bottom of the dosa starts to turn golden brown sentence: place the filling in the center and fold the dosa on both sides