Pudla Chickpea Flour Pancakes

Name: Pudla (Chickpea Flour Pancakes)
Ingredients: 2 cups plus 2 tablespoons chickpea flour (besan); 2/3 cup whole milk yogurt, plus extra to serve; 1 3/4 cups water; 1 teaspoon salt; 1/2 teaspoon ground turmeric; 1 serrano chile, finely chopped; 4 cloves garlic, crushed; 1 3/4-inch piece ginger, peeled and grated; 2 tablespoons cilantro, chopped; 1/2 teaspoon baking powder; Unsalted butter, for cooking