Add the ingredients to a mixer

Fit a stand mixer with the hook attachment. Transfer the sponge, if using, to the bowl of the stand mixer. Then, add the flour and any other ingredients called for in the recipe.

Knead the dough

Turn the mixer on low speed and knead, adding flour as necessary, until the dough comes away from the sides of the bowl. Continue kneading until smooth and elastic, 5 to 7 minutes. 

Transfer to a floured work surface

Remove the bowl from the mixer and use your hand or a spatula to ease the dough onto a floured work surface.

Place the dough in an oiled bowl

Form the dough into a ball by tucking the sides of the dough underneath and lightly pinching them together. Rotate, tucking and pinching, until a ball forms. Place the ball in an oiled bowl and cover with plastic wrap.