Perle was bred in the Hüll project from an English Northern Brewer. There seems to be a difference of opinion as to Perle’s aroma characteristics—European breweries claiming that Perle is much like and a good substitute for Mittelfrüher, while U.S. and Japanese breweries disagree with that assessment. It may be due to the alpha acid difference in content between the various places where it is grown: Germany averaging 8.5% while in the U.S. it can get up to 11%. Perle is said to have a pleasant aroma with hints of spice.