The American-style Imperial Stout is the strongest in alcohol and body of the Stouts. Black in color, these beers typically have an extremely rich malty flavor and aroma with full, sweet malt character. Bitterness can come from roasted malts or hop additions.
Definitively American, the imperial porter should have no roasted barley flavors or strong burnt/black malt character. Medium caramel and cocoa-like sweetness is present, with complementing hop character and malt-derived sweetness.