Don’t let buildup ruin your coffee. Follow this guide to keep your espresso machine clean and performing like new.

Your coffee tastes a bit flat, a little chalky, and you’re eyeing those glossy “pro cleaning” ads. You don’t need them.

This article is part of CNN Underscored’s Guide to Coffee, a two-week focus on everything coffee, from the best methods for brewing it to the best machines to do so and the accessories and gear you ...