Per LB CAD
Released in 2009, aroma variety Delta is a relatively new kid on the block. It is a Fuggle-type hop, similar to a Willamette, but with a kick. It features a mild and pleasantly spicy aroma of with notes of melon and citrus. Delta is considered ideal for ale finishing.
Hopsteiner first offered Delta to Boston’s Harpoon Brewery as a cross between an English-style Fuggle and a Cascade derived male. Harpoon brewed it into an English-style single hop ESB. Delta has a much more emphatic flavor than its Fuggle parent—a truly American punch.
Alpha - 5.5% - 7%
Descriptions provided by the awesome Hopslist.com