After having emptied their baskets filled with grapes into a great vat to be crushed by treading with the feet, the workers began the second pressing, an operation engaging many persons. The grapes and stalks were collected in a cloth, closed to form a sort of bag, which was twisted from both ends. Starting in 2000 B.C. a wooden structure with a crossbeam was used to twist the bag by means of a pole attached to one end of it, while the other was fixed to a support.