John J. Palmer is an American author best known for his contributions to the homebrewing community. He is the author of "How to Brew: Everything You Need To Know To Brew Beer Right The First Time," a book widely regarded as one of the most comprehensive guides for homebrewing enthusiasts. First published online in 1995 and later in print in 2000, "How to Brew" provides detailed instructions for brewing beer at home, covering all aspects from beginner techniques to advanced brewing science. Palmer's clear and accessible writing style has helped countless homebrewers to successfully create their own beer and has made his book a staple resource in the craft brewing industry.