The real answer is to call it a "very light tasting enjoyable beer, spicy, very aromatic, and warm with a kick." For competition purposes though my vote would be for 21A, if it's obvious that the spicy character comes from spice and not just hops/yeast. Cat 22 is for smoke beer or wood aged beer. Cat 23 (specialty), if you can't see it working in Cat 21A. cheers, j