Riwakaâ€™s heavy oil content (nearly twice that of her Saazer parent) gives her a high grapefruit note which, according to one brewer, makes her the ultimate for hoppy beers. Nearly a 1:1 ration of alpha to beta, averaging at 5%. With cohumulone running 29-36%, and a unique oil balance, Riwaka is considered the darling of the New Zealand craft beer scene.