Mangalore Buns / Bhubhus Roti.
Peel the banana , add it in a wide bottomed bowl n mash well with hands, then add curds, sugar n mix again till the sugar dissolves then add cumin seeds ,cooking soda, salt n mix again, add oil n maida little by little and keep mixing , stop adding maida once it gets dough consistency .Knead it well for at-least 10 to 15 mts , till it becomes soft n sticky .Grease the dough with little oil n set aside in warm place , covered for at least 5 to 6 hours or overnight .
Make golf size balls of the dough ... dust a platform n roll into thick poori size ..Make so for rest of the dough balls .
Heat oil in a kadai and carefully drop in the hot oil.. , press gently in the middle to puff up n deep fry turning both the sides in medium flame .
Note : For soft and fluffy buns kneading the dough for at least 10 to 15 mts is very important .