01 - In a large mixing bowl, whisk together the sourdough discard, yogurt, sugar, melted butter (or oil), salt, baking powder, and baking soda until smooth and well combined.
02 - Gradually add the all-purpose flour to the wet mixture, stirring with a wooden spoon or spatula until a shaggy dough begins to form and no dry pockets of flour remain.
03 - Add warm water one tablespoon at a time, mixing after each addition, until the dough is soft and slightly tacky but holds together in a cohesive ball.
04 - Transfer the dough to a lightly floured work surface and knead gently for 2 to 3 minutes until the surface is smooth and the dough springs back slightly when pressed.
05 - Place the dough in a lightly greased bowl, cover with a damp kitchen towel, and let it rest in a warm spot for 1 to 2 hours. The dough will puff up noticeably, though it may not fully double in size.
06 - Gently deflate the dough and divide it into 8 equal portions. Roll each portion into a smooth ball and keep them loosely covered to prevent drying out.
07 - On a lightly floured surface, roll each dough ball into an oval or teardrop shape approximately 1/4 inch thick, dusting with flour as needed to prevent sticking.
08 - Heat a cast iron skillet or nonstick pan over medium-high heat until the surface is very hot. A light sprinkle of water should sizzle and evaporate immediately on contact.
09 - Place one rolled naan onto the hot skillet. Cook until large bubbles form across the surface and the underside is golden brown with charred spots, about 1 to 2 minutes. Flip and cook the other side for 30 to 60 seconds until puffed and cooked through.
10 - Immediately brush the cooked naan with melted butter. Sprinkle with minced garlic, chopped fresh cilantro, or nigella seeds if desired. Repeat the cooking process with the remaining dough portions and serve warm.