Last night I did a little 5 year vertical of a beer. Each year the Anchor Brewing Company releases a holiday beer, Our Special Ale. Its a spiced beer and ever year the recipe is slightly altered. I had a 5 year vertical 2002-2006. One of the fun things to do with beer is these kind of verticals. See how the beer changes and evolves. If you are interested the 2005 was my favorite.