"If you are a coffee nerd, this book is a must-read!"

The Physics of Espresso by Jonathan Gagné isn’t just another coffee book—it’s the go-to guide for anyone who wants to truly understand what’s happening in their cup. Think of it as the modern follow-up to Illy’s classic Espresso Coffee: The Science of Quality, but with way more practical tips you can actually use at home or behind the bar.

Gagné breaks down the physics of espresso in a way that’s smart, clear, and surprisingly easy to follow. Drawing from published research, his own experiments, and the work of fellow coffee obsessives, he explains everything from extraction to technique—sprinkling in plenty of fresh ideas along the way.

Chapter topics include:

• Water chemistry

• Espresso extraction

• Percolation science

• Grinding

• Puck prep

• Shot dynamics

• Pressure and flow profiling

• Coffee storage and freshness

Also from Jonathan Gagne, the famous PHYSICS OF FILTER COFFEE