In a large glass, dissolve the yeast and 1 teaspoon of sugar with 3/4 cup warm water (about 100 degrees F). Let it sit on your counter until it's frothy, about 10 minutes.

Meanwhile, sift the flour, salt, remaining 1 teaspoon of sugar and baking powder into a large, deep bowl.

Once the yeast is frothy, add the yogurt and the olive oil into the glass, and stir to combine. Pour the yogurt mixture into the dry ingredients and gently mix the ingredients together with a fork. When the dough is about to come together, use your hands to mix. As soon as it comes together, stop kneading, it should feel a bit sticky. Cover the dough with plastic wrap and let it sit in a warm, draft-free place for 3 hours.

After 3 hours, assemble 2 bowls, one with extra flour, and one with water. The dough will still be sticky. Separate the dough into 6 equal portions and lightly roll each one in the bowl of extra flour to keep them from sticking to each other.

Warm a large cast-iron skillet over high heat until it's nearly smoking. Make sure you have a lid large enough to fit the skillet and have a bowl of melted butter at the ready.

Dampen your hands in the bowl of water and pick up one of your naans, flip-flopping it from one hand to the other to lightly dampen it. Gently lay it in the skillet and set your timer for 1 minute. The dough should start to bubble.

After about 1 minute, flip the naan. It should be blistered and somewhat blackened, and cover the skillet with the lid and cook for about 1 minute more.