Castle Island Keeper is a crisp and refreshing American IPA known for its balanced bitterness and citrusy hop notes, often with hints of pine. It's a staple from Castle Island Brewing Co., a Massachusetts-based brewery established in 2015, committed to crafting approachable and high-quality beers. You should try it for its reliable quality, broad appeal, and its representation of a well-executed East Coast IPA, perfect for both seasoned craft beer drinkers and those new to the style.