Sierra Nevada was one of the first craft beer producers, and they continue to be one of the best. They have been brewing Celebration since 1981, just a year after the brewery opened.
Celebration is not the typical malty Christmas beer. Indeed it is one of the first examples of the IPA style in American craft brewing. Oddly though, the strong bitterness on the back of my tongue reminds me of a spiced beer, with flavors like mace, ginger, pepper and perhaps a little evergreen. It is a great beer to sip while sitting around the tree.