Originally a winter seasonal, Natian is now canning Old Grogham year-round. Hooray! Here's the description from the brewery:
Palisade hops were added throughout the boil and dry hop schedule, along with high alpha American hops for bittering, Noble hops for aroma and a few other varieties in-between to balance the heavy malt profile. Rum soaked Oregon oak spires added during the final stages of fermentation bring flavor notes of caramel and vanilla to complement the bitterness.
Old Grogham is definitely a "big" beer, but it's depth of flavor is much deeper than most Imperial IPAs I've tried. Thick, heavy and malty, with a caramel biscut-y taste and bitter finish. Oaky. Boozy. Tasty!