Let your homebrew sing with flavor and aroma. The Centennial Hop Pellets - 1 oz (4205A) are a domestic variety with an average alpha of 9.5 to 11.5% to bring bold flavor to your brew. They have floral and citrus tones perfect for Medium to Dark American ales.Bold: These Centennial Hop Pellets are a domestic variety with an average alpha of 9.5 to 11.5% to bring bold flavor to your brew. Flavorful: They have floral and citrus tones perfect for Medium to Dark American ales.