In a mixing bowl, combine corn flour, ginger garlic paste, chile powder, tandoori masala, black pepper powder, salt, and coriander leaves. Mix well. Now add water in tablespoon increments and mix well to form a medium-thick batter.
⅓ cup Corn flour, 1 tablespoon Ginger garlic paste, 1 teaspoon Chile powder, 1 teaspoon Tandoori masala, ¾ teaspoon Black pepper powder, 1 teaspoon Salt, 1 tablespoon Coriander leaves