Porters and stouts are all malty dark brews that focus on various levels of roast, chocolate, and coffee flavors. They also feature a wide variety of hopping and yeast character depending on the origin, variety, and brewer.
American Stouts are roasty, full-bodied, dark beers with moderate to fairly high bitterness and hop character.
A bold, malty black beer featuring chocolate, roasty, and coffee flavors with a large range of expressions depending on region and taste. Some, particularly American expressions, will feature substantial bitterness and hop aroma with a less fruity yeast profile, while English versions tend to favor a malt balance with more fruity esters.