Cook & mash sweet potato; add it along with the remaining 3/4 cup lukewarm water, 3 Tbsp olive oil, 1 1/2 tsp salt & 4 cups flour. When dough forms, knead for about 7-8 minutes until the dough is soft & satiny. Place dough in a greased bowl, cover with plastic wrap & allow to rise in a draft fee place until doubled in size, about an hour.