The Sour Truth About Espresso Espresso's characteristic acidity is both a blessing and a curse for coffee aficionados worldwide.
On one hand, it's what sets espresso apart from other brewing methods, adding a thrilling layer of complexity to each sip.
But an overpowering sourness can quickly turn a perfectly crafted shot into a palate wrecking disaster. The answer lies at the intersection of history, chemistry, and tradition.