Viticulture was certainly a large part of the economy of the Roman Empire, and the spread of Roman civilisation included the spread of wine growing and wine drinking as the colonising soldiers moved across the Old World. In ancient Rome, a common form of wine was known as mulsum, heavily sweetened with honey, and produced on large agrarian estates largely by the slave population. What remained in the wine press after crushing the grapes - seeds and skins mainly - was often fed to livestock, or alternatively brewed into a very low quality 'wine' and given to the slaves who'd grown the grapes.
