Potato Dosa (Masala Dosa)

Ingredients

• Potatoes

  • 1 1/2 lb (675 g) russet potatoes, peeled and cubed (about 3 potatoes)
  • 2 tbsp (30 ml) vegetable oil
  • 1/2 tsp black mustard seeds (see note)
  • 1 tbsp fresh ginger, chopped
  • 2 garlic cloves, chopped
  • 6 fresh curry leaves
  • 1 to 2 serrano chili peppers, seeded and chopped
  • 2 onions, thinly sliced
  • 1 cup (250 ml) water
  • 1/2 tsp ground turmeric
  • 1/2 tsp sugar
  • 1/4 cup (10 g) cilantro stems and leaves, finely chopped

• Crepes

  • 1 3/4 cups (430 ml) buttermilk
  • 1 cup (165 g) rice flour
  • 3/4 cup (130 g) fine cornmeal
  • 1/3 cup (75 ml) cold water
  • 1 tsp sugar
  • 1/2 tsp salt
  • 1/2 tsp baking soda
  • 1/4 cup (55 g) clarified butter or ghee, melted