Every Inca citizen was assigned a very strict task in life, connected to their age, gender and social position. For example children over five years of age had the responsibility of carrying water up to the fields where grown-ups were growing crops. And women older than fifty had to weave cloth for making clothes. Even the physically and mentally disabled were given daily tasks that were attuned to their capabilities. One of these tasks was chewing maize or corn and spitting it back into a big bowl. By letting this substance ferment the Inca made their own special corn beer called Chicha which they drank on festive occasions.