Blog
Espresso guides, machine reviews, and barista technique from Papel Espresso — practical articles on dialing in shots, troubleshooting channeling, and machine care.

Pressurized vs Non-Pressurized Baskets for the DeLonghi ECP3420
Pressurized vs non-pressurized baskets: Upgrading your DeLonghi ECP3420 The DeLonghi ECP3420 is a fantastic entry point into the world of home espresso. It’s affordable, reliable, and capable of producing a decent shot of coffee right out of the box. However, as you delve deeper into the espresso hobby, you’ll quickly encounter one of the most […]
Mastering the DeLonghi ECP3420 Steam Wand for Latte Art
Your guide to perfect latte art with the DeLonghi ECP3420 steam wand The DeLonghi ECP3420 is a fantastic entry point into the world of home espresso. It’s capable, compact, and pulls a surprisingly delicious shot of coffee. However, many new owners find themselves frustrated when trying to create silky, pourable microfoam for latte art. The […]
Why Your DeLonghi ECP3420 Espresso Tastes Sour and How to Fix It
Why your DeLonghi ECP3420 espresso tastes sour and how to fix it There’s nothing quite like the promise of a rich, aromatic espresso to start your day. You’ve got your DeLonghi ECP3420, a capable and popular machine for home baristas, ready to go. You pull a shot, take a sip, and… it’s sour. That sharp, […]
How to Dial In Espresso on the DeLonghi ECP3420
The DeLonghi ECP3420 is a fantastic entry-level espresso machine that punches well above its weight. For many aspiring home baristas, it’s the first step into the world of pulling delicious shots at home. However, unboxing it and expecting café-quality results immediately can lead to frustration. The secret isn’t in the machine alone, but in the […]
How to reset and recalibrate your Gaggia Classic PID for peak performance
The Gaggia Classic is a legendary machine in the world of home espresso, celebrated for its robust build and potential for producing café-quality shots. One of the most popular and transformative upgrades for this machine is the installation of a PID (Proportional-Integral-Derivative) controller. This small device replaces the machine’s inaccurate stock thermostat, offering precise temperature […]
Understanding the difference between SSR types in Gaggia Classic PID kits
Upgrading a Gaggia Classic with a PID (Proportional-Integral-Derivative) controller is one of the most popular and effective modifications for aspiring home baristas. This upgrade transforms the machine’s temperature stability, allowing for repeatable, high-quality espresso shots. At the heart of this modification lies a small but critical component: the Solid State Relay, or SSR. However, when […]
The effect of PID temperature precision on espresso crema and texture
The secret to perfect crema: How PID precision shapes your espresso The pursuit of the perfect espresso shot is a journey filled with variables. From the bean origin and roast level to the grind size and tamping pressure, every detail matters. Among these, one of the most critical yet often overlooked elements is temperature stability. […]
How to use a PID to master espresso brewing at high altitudes on a Gaggia Classic
Mastering high-altitude espresso: A PID guide for the Gaggia Classic Brewing exceptional espresso is a delicate dance of variables, with water temperature being one of the most critical partners. For those living at high altitudes, this dance becomes significantly more complex. The lower atmospheric pressure causes water to boil at a reduced temperature, throwing standard […]
Transitioning from manual temperature surfing to PID: What to expect in your cup
For many home baristas, the quest for the perfect espresso shot is a journey filled with variables. Grind size, puck prep, and bean freshness are all part of the puzzle. One of the most elusive variables, however, is brew temperature, especially on entry-level single-boiler machines. The common method to manage this is “temperature surfing,” a […]
Creative ways to integrate or hide a PID display on the Gaggia Classic housing
Creative ways to integrate or hide a PID display on the Gaggia Classic The Gaggia Classic is a legendary machine in the world of home espresso. Its robust build and timeless design have made it a favorite for beginners and enthusiasts alike. One of the most popular upgrades is adding a PID (Proportional-Integral-Derivative) controller, which […]











