In a small pan, heat oil on medium to low flame. Add mustard seeds, and when they start to splutter, add urad dal, garlic cloves (and hing and sauté till the raw smell of garlic goes off (about 1 minute) and urad dal becomes light in color.
1 teaspoon Mustard seeds, 1 teaspoon Urad dal, 3 Garlic cloves, finely chopped, Asafoetida, pinch
Next add turmeric powder, curry leaves and saute for another few seconds.
Turmeric powder, pinch, 1 Sprig Curry leaves,
Mash the cooked potatoes. To this, add green chilies, ginger, coriander leaves, salt, and sautéed ingredients prepared above and mix well.
3 Medium potatoes, boiled, 2 Green chilies, finely chopped, 1 tablespoon Ginger, grated, 2 tablespoon Cilantro or Coriander leaves, finely chopped, Salt to taste
Divide this into 9 or 10 portions or to desired size bonda or vada and make balls out of it.