Combine the yeast, sugar, and water into a bowl, and stir them well.
Let the yeast activate for 5-10 minutes until the mixture is foamy and bubbly.
Whisk in the yogurt then add ¾ of the flour along with the salt. Mix all together to form a dough.
Gradually add the remaining flour until you get the right consistency and knead it for a few minutes until you get a soft and slightly sticky dough.
Cover the bowl and let the dough rise until it doubles the size. The rising time depends on the temperature of the room and it might take up to an hour.
Divide the dough into 4 equal pieces, around 8 ⅓ oz (235 grams) each, and turn them into balls. I suggest using an electronic kitchen scale in this step.
Place the dough balls on a lightly floured surface, sprinkle some flour on top and let them rest for 10 minutes covered with a clean kitchen cloth.
Take a dough ball and press it down. Roll it into a circle with a rolling pin about 8" (20 cm) wide.
Repeat the same with the remaining dough balls. Let the dough circles rest for another 10 minutes before cooking.
Heat a heavy-based frying pan on medium heat and place the dough in the pan when it is hot.
Lower the heat and cook until bubbles appear on the surface and the bottom of the dough is golden brown. This should take 4 to 5 minutes. Flip it and cook it for another 4 to 5 minutes.
Set it aside on a plate and lightly brush it with butter. Cover the cooked bazlama with a clean kitchen cloth or tin foil to keep them warm.
Repeat the same process with the remaining dough and serve them when they are still warm.