" Espresso, made by steam expressing finely ground coffee, is rich in flavor and aroma and chlorogenic acids, but not very concentrated at all in caffeine. "
- Chris Kilham

The quote emphasizes that espresso, a beloved coffee drink, has its unique characteristics. It highlights how espresso is crafted by forcing hot water through finely ground coffee beans using steam pressure, resulting in a beverage that is rich in flavor and aroma. Additionally, it notes that this process extracts chlorogenic acids, which are beneficial compounds found naturally in coffee. However, contrary to common belief, the quote suggests that espresso does not contain an exceptionally high concentration of caffeine compared to other coffee preparations.

On a deeper level, the quote challenges some misconceptions about espresso. Many people think of espresso as being very potent due to its strong taste and small serving size. But according to this statement, while espresso is indeed flavorful and aromatic, it doesn't pack more caffeine than other brewing methods might produce per volume. This insight underscores the importance of understanding the nuances in coffee preparation techniques and their effects on both flavor and health properties. It encourages coffee enthusiasts and consumers to look beyond common assumptions about how different types of coffee are made and what they contain.

Chris Kilham, an experienced journalist and ethnobotanist, is known for his extensive research into plants used around the world for traditional medicine and food purposes. He has dedicated much of his career to exploring the natural resources found in various cultures, with a particular focus on coffee and other beverages like tea. His work often involves uncovering lesser-known aspects of these widely enjoyed drinks, providing valuable insights that challenge conventional wisdom while educating both experts and casual consumers alike.