Mix the flour and sugar in a large bowl. Dissolve the dry yeast in warm water (about 95 to 98°F). Add to flour and knead. Cover the dough with a wet cloth and let rise, (the time for rising varies according to the temperature, usually about 3 to 4 hours is enough). After the dough has risen, add baking powder (dissolve in ½ tablespoon of cold water first) and knead again