Make small pieces of Banana and grind it a blender along with sugar and blend in to smooth paste.
In a large mixing bowl add this paste yogurt, cumin, baking soda and salt.
Combine well with a help of spoon
Now add 2 cup maida and prepare dough.knead for 5 minutes or till dough turns smooth,grease the dough with a tsp of oil.cover and rest in warm place for 3 to 4 hours .
Now knead the dough slightly and pinch a ball sized dough.Dust with some maida and roll slightly thick than poori.Deep fry the buns in hot fry till banana poori turns dark golden brown in colour both side.serve the banana buns / mangalore buns with chutney or plain.