Turn out onto a board. Take one half of the dough and cut into three pieces. Roll each piece out by hand until you have three even ropes. Pinch together at one end.
Then, start braiding by crossing the right rope over the center rope. Then, cross the left rope over the center. Alternate in this way, right and left over center, until the braid is complete.
Do the same with the other half of the dough.