The Physics of Espresso by Jonathan Gagné is the new standard for espresso science and will be for generations to come. POE is the modern successor to Espresso Coffee: The Science of Quality by Illy, but with far more actionable advice. The Physics of Espresso is clear, concise, and comprehensive, as Jonathan guides the reader through the physics of espresso preparation and extraction. Drawing on a blend of published scientific papers, personal experiments, and impressive work by other coffee enthusiasts, Jonathan covers every critical detail of espresso making and offers many original ideas.