These mugs are in the leather-hard stage. They have just been trimmed. The clay has dried firm enough to handle them without pushing them out of shape too much, but not so much that it is difficult to tool and flute the foot ring.
In ceramics, handles need to be applied to many types of ware. There are things to know not just to make them look good, but to be strong, durable, practical.
Roll, Cut, Pull, Attach Handle-making Method