I may be wrong, but i believe its for better flavor since you get more surface area. But i can only speak for twisting wire since ive never braided. To start all you really need is a drill, channel locks or pliers, and your wire! Cut 2 or more equal length strands, having them parallel to each other insert the same end of both wires into the drill and lock it down, grab the opposing ends with the pliers and start your twisting with the drill VERY slowly. You can also do it by hand, but ive always used a drill.