Crystal is a cross between Hallertau and a USDA numbered male aimed at producing a Mittlefru-type variety with downy mildew resistance. The result is something different than expected but nonetheless intriguing. Crystal presents a curious mix of slight perfume and fruit, mixed with woody herbal hoppiness and a pinch of spice. She is a curious mistress and sister to other Hallertau types Mt. Hood, Liberty, and Ultra.