Artemisia vulgaris Mugwort was used in the Middle Ages to ward off evil possession & was a popular stuffing for roast goose. As the name implies, it was traditionally used in mugs of beer before the popularity of hops. Europeans frequently stuffed pillows w/mugwort (& hops) to bring good & vivid dreams.
1/2 to 1 oz per 5 gallons is sufficient for bittering. Imparts a mellow sage-like aroma.