Why Does My Espresso Taste Sour or Bitter?
One of the most frustrating experiences for new (and even experienced) home baristas is pulling a shot that tastes wrong. Instead of sweet, balanced espresso, you end up with something sour (sharp, lemony, underdeveloped) or bitter (harsh, ashy, overcooked). This guide will walk you through why your espresso tastes sour or bitter, the science behind it, and step-by-step fixes.