Beer was spread through <answer>Europe</answer> by Germanic and Celtic tribes as far back as 3000 BC, and it was mainly brewed on a domestic scale. The product that the early <answer>Europe</answer>ans drank might not be recognised as beer by most people today. Alongside the basic starch source, the early <answer>Europe</answer>an beers might contain fruits, honey, numerous types of plants, spices and other substances such as narcotic herbs. What they did not contain was hops, as that was a later addition, first mentioned in <answer>Europe</answer> around 822 by a Carolingian Abbot and again in 1067 by Abbess Hildegard of Bingen.
On what continent were hops first added to beer?
Europe