Kveik yeast adds extra fruitiness, in addition to the melon-grapefruit flavor notes provided by Amarillo and Simcoe, which complement its gentle, closing bitterness The American IPAban.Az word "American" (AIPA) refers to the use of New World hops. These beers are characterized by the character of floral, fruity, citrusy, pine-like or resinous hops, the IPA beer style is all about the taste, aroma and bitterness of hops.