Espresso Troubleshooting Guide (Advanced)
Last Updated: February 2026 | ~28 min read Fix Sour, Bitter, Channeling & Inconsistent Shots Espresso isn’t random. If a shot tastes sour, bitter, watery, harsh, or keeps changing from one pull to the next, the cause is almost always one of a few things: grind size, brew ratio, puck prep, temperature, water, or machine […]










