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 until a shaggy dough begins to come together.
03 - Add warm water one tablespoon at a time, mixing after each addition, until the dough is soft and slightly tacky but holds its shape.
04 - Turn the dough onto a lightly floured surface and knead gently for 2 to 3 minutes until it becomes smooth and elastic.
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 until puffed, though it may not fully double in size.
06 - Punch down the dough gently and divide it into 8 equal portions. Roll each portion into a smooth ball.
07 - On a lightly floured surface, roll each dough ball into an oval or teardrop shape approximately 1/4 inch thick.
08 - Heat a cast iron skillet or nonstick pan over medium-high heat until it is very hot and lightly smoking.
09 - Place one rolled naan onto the hot skillet. Cook until large bubbles form across the surface and the underside is golden brown, about 1 to 2 minutes. Flip and cook for another 30 to 60 seconds.
10 - Remove the cooked naan from the pan and immediately brush with melted butter. Sprinkle with minced garlic, fresh cilantro, or nigella seeds if desired.
11 - Repeat the cooking process with the remaining dough balls. Serve the naans warm straight from the skillet.