In a bowl add lukewarm water. Add sugar and yeast. Stir it and let it rest until it froth.
In another bowl take flours, salt and sweet potatoes. Add yeast solution.
Start kneading the dough by adding water and prepare a soft dough.
Take the dough on counter. Add oil and knead it for 5 min.
After 5 min of kneading dough will become soft and smooth. Now place the dough in greased bowl and cover it with cling wrap.
Place the bowl at a dry and warm place. Let it rest until dough becomes double.
When dough becomes double, punch it to release the air.
Using a rolling pin, roll it into a rectangular sheet and shape it like a loaf.
Place the shaped loaf in a greased loaf tin facing seam side down.
Cover it with cling wrap and let it rest until it again becomes double in volume.
Preheat the oven at 200 °C for 10 min.
Brush the dough with water and bake in preheated oven for 35 min.
When baked, take the bread out from oven. Demould it and place it on cooling rack.
Let the bread rest for minimum 2 hrs before you slice.