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Nerd Out - Coffee Brewing Guides & Barista Tips

E61 Coffee Machine
58mmJun 5, 2026
E61 Grouphead Upgrades: The Best Accessories Worth Getting

The E61 grouphead is found on some of the best prosumer espresso machines in the world - ECM, Rocket, Profitec, Lelit, La Marzocco and more. It's a proven, reliable design that's been around for de...

Gaggia Classic Coffee Machine
58mmJun 5, 2026
Gaggia Classic Upgrades: The Best Accessories Worth Getting

The Gaggia Classic is one of the most popular entry-level espresso machines ever made - reliable, repairable, and with a huge community behind it. It's also one of the most upgrade-friendly machine...

Breville Coffee Machine
58mmMay 22, 2026
Breville Dual Boiler & Oracle Upgrades: Best Accessories | Coffee Nerd

The Breville Dual Boiler and Oracle are two of the best prosumer espresso machines on the market. But even the best machines benefit from a few smart upgrades. Here's what's worth adding. 1. Stainl...

Broken Breville Diffuser Plate
58mmMay 21, 2026
Breville Oracle & Dual Boiler Diffuser Plate: Why It Cracks (And What to Do About It)

If you own a Breville Oracle or Dual Boiler and your shots have started tasting inconsistent — bitter, sour, or just harder to dial in than they used to be — there's a good chance your diffuser pla...

Ddelonghi La Specialist Coffee Machine
51mmApr 23, 2026
De'Longhi La Specialista Upgrades: The Accessories Worth Getting

The La Specialista does a lot out of the box - but a few smart 51mm upgrades take it from good to genuinely dialled in. Here's what's worth adding, in order of impact, and which ones matter for you...

Broken diffuser plate from a breville 58mm machine
Apr 21, 2026
Why You Should Replace the Plastic Diffuser Plate in Your Breville Oracle or Dual Boiler

Most Breville and Sage owners don't even know the diffuser plate exists. But if you own an Oracle or Dual Boiler, there's a good chance it's quietly affecting every shot you pull. What Is a Diffus...

Bottomless portafilter
Apr 21, 2026
Breville Barista Express & Pro Upgrades: The Accessories Worth Getting

The Barista Express and Barista Pro are two of the best entry-to-mid espresso machines on the market. But out of the box, they're leaving some extraction quality on the table. A few targeted upgrad...

Bottomless portafilter
51mmMar 12, 2026
Portafilter Sizes Explained: What Size Is Your Espresso Machine?

One of the most common questions from home baristas is a simple one: what size portafilter does my machine take? It matters because everything that connects to your grouphead — replacement portafil...

Breville diffuser plate
Barista TipsMar 10, 2026
Why You Should Replace the Plastic Diffuser Plate on Your Breville or Sage 58mm Machine

If you own a Breville Oracle, Dual Boiler, Oracle Touch, or Oracle Dual Boiler — or their Sage equivalents in the UK — there's a small plastic part inside your grouphead that's quietly working agai...