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Nerd Out - Coffee Brewing Guides & Barista Tips

Breville Dual Boiler & Oracle Upgrades: Best Accessories | Coffee Nerd
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...

Breville Oracle & Dual Boiler Diffuser Plate: Why It Cracks (And What to Do About It)
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...

Portafilter Sizes Explained: What Size Is Your Espresso Machine?
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...

Why You Should Replace the Plastic Diffuser Plate on Your Breville or Sage 58mm Machine
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...