In a bowl, mix the sugar and the yeast in the warm water. Basically Yeast is activated in the water as I’m feeding it with sugar.
Wait 5-10 minutes untill you see some bubbles then add the flour , the salt and the melted butter.
Knead with your hands until the dough is homogeneous and non sticking.
Cover the bowl with a dish cloth and wait until the dough has doubled it's size.
Knead the dough and form a long tube of about 2 inches diameter.
Divide the dough into 12 round pieces.
kneed each pieces in balls and gently press your hand on top to form a thick round disc.
Cover a tray with semolina flour and place the dough pieces on top.
Cover the other side with more semolina flour.