Add milk, stirring until mixture just forms a dough, then gather into a ball. (epicurious.com)
Turn the dough out onto a piece of plastic wrap, and gather into a ball with your hands. (epicurious.com)
The easiest way to do this is to tuck the edges of the dough underneath itself, continuing to tuck until it naturally gathers into a ball with a nice taut surface. (chezcateylou.com)