The American Double Stout gets some of it inspiration from the Russian Imperial Stout. Many of these are barrel aged, mostly in bourbon / whiskey barrels, while some are infused with coffee or chocolate. Alcohol ranges vary, but tend to be quite big, and bigger than traditional Russian Imperial Stouts. Most tend to have cleaner alcohol flavors, higher hop levels, and more residual sweetness. Very full-bodied with rich roasted flavors far surpassing normal stouts.
Average alcohol by volume (abv) range: 7.0-12.0% --BeerAdvocate
