"Thou spring'st a leak already in thy crown.
A flaw is in thy ill-bak'd vessel found;
Tis hollow, and returns a jarring sound.
Yet thy moist clay is pliant to command.
Unwrought, and easy to the potter's hand:
Now take the mould; now bend thy mind to feel
The first sharp motions of the forming wheel."
-John Dryden, Third Satire of Persius
As the at times harsh nature of the New World transforms and transmutes the young Pilgrim into a man of honor and standing, so the potter shapes and molds the amorphous clay into vases, cups and bowls. Pottery allows you to dig for clay, and to make things from it.
To make clay, first add Milk of Lime to the Clay Trough. Next, dig up a ball of dirt from the ground. While carrying the dirt, right click the filled trough. The production counter will begin and one clay will appear in inventory for each cycle.