Hops aren’t just one thing. They are made up of several chemicals. Any of which someone could be allergic too. Alpha Acids (Humulone, Cohumulone, Adhumulone), Iso-Alpha acids, Beta Acids (Lupulone, Colupulone, Adlupulone), and other oils (Humulen, Myrcen, Caryophllen, Farensen). Different styles have different…