ca: BOCA D'UNA GERRA
Lip is the indented part at the edge of the neck of a jug, from where the liquid when poured, runs out. Made when clay is soft by pulling the part down and outwards with your finger, giving it the size and shape required. The center of the lip is usually designed to be directly in line with the center of the handle but it can be at 90º to it. This invisible line cuts the circle of the neck in half.
a) Side view of a jug.
b) Supported by your left hand fingers and the thumb of your right one, it pulls the clay down to start to form the lip.
c) The clay is shaped underneath the lip.