Boil sweet potato and peel off the skin and keep aside.
If the sweet potatoes are small in size add one more as it will give the required sweetness to the poori's.
Take flour and mix in sweet potato and knead a soft dough.
Divide it in small balls and roll out small poori's .
Heat oil until hot and deep fry. REmove poori's on paper napkin and serve hot or chilled.