WBC 2009 Champion’s Espresso Formula Explained

When WBC 2009 World Champion Gwilym Davies toured China—invited by a leading espresso machine brand—audiences weren’t wowed by his latte art (rated merely average). What stood out instead was his deep, methodical approach to espresso. Rather than relying on industry dogma, Davies brought data, observation, and a framework for refining shots. That mindset, more than any trick, is what many baristas truly lack.

Davies’ go-to espresso formula? 20g of coffee grounds, brewed for 28–30 seconds with water at 94.5–95.5°C, yielding 32g of espresso. He stresses: these numbers are a starting benchmark, not universal law. Every coffee, machine, and grinder demands its own fine-tuning.

Why Davies’ Espresso Parameters Stand Out

Most baristas learn a “classic” espresso standard: 14g in, ~60g out (2 fluid ounces), in 22–28 seconds, using water around 92–94°C. But Davies flips the script. His formula—20g in, 32g out, over 28–30 seconds at 94.5–95.5°C—is built not on tradition, but on hands-on experimentation and outcomes. This isn’t just a different set of numbers; it’s a different way of thinking about espresso brewing.

How Davies Developed His Espresso Theory

Through years of competitive experience and post-championship research, Davies developed a methodical approach to understanding espresso. Rather than sticking rigidly to conventional wisdom, he tested variables across different beans, machines, and grinders. His focus wasn’t just on speed or volume, but on the balance, clarity, and texture achievable through controlled variables. His 20g/32g guideline emerged not as a rule, but as a reliable reference point shaped by iterative testing.

What Makes This Formula Different from Traditional Espresso Specs

Traditional espresso guidelines typically call for:

• 14g of coffee
• Extraction time of 22–28 seconds
• Water temperature around 92–94°C
• Yield of approximately 60g (2 fluid ounces)

In contrast, Davies recommends:

• 20g of coffee
• Extraction time of 28–30 seconds
• Water temperature between 94.5–95.5°C
• Yield of 32g

This results in a denser, more concentrated shot using more coffee, hotter water, and a slightly longer brew time—all chosen based on his empirical findings rather than industry norms.

Frequently Asked Questions

What espresso parameters did WBC 2009 champion Gwilym Davies recommend?

Gwilym Davies suggested using 20g of coffee grounds, extracting for 28–30 seconds with water heated to 94.5–95.5°C, to produce 32g of espresso. He presented this as a reliable reference point for dialing in espresso, though he emphasized that ideal settings vary with each coffee, machine, and grinder.

How is Davies’ espresso formula different from traditional standards?

Traditional espresso often uses 14g of coffee, 22–28 seconds extraction, 92–94°C water, and a 60g yield. Davies’ formula increases coffee dose (20g), extends brew time (28–30s), raises water temp slightly (94.5–95.5°C), and targets a smaller yield (32g)—all based on his systematic testing rather than conventional wisdom.

Does Davies’ method require specific equipment?

No specific machines or grinders are mandated, but Davies stressed that his formula is not one-size-fits-all. The ideal parameters depend on your individual espresso machine, grinder, and coffee bean, so baristas should use his numbers as a starting benchmark for their own adjustments.

Why did Davies focus on espresso theory instead of latte art during his China tour?

Though his latte art was only middling, Davies prioritized sharing his research-driven espresso methodology. Chinese audiences were more impressed by his structured, experimental approach to understanding and improving espresso extraction than by traditional flair techniques.

Should home baristas use Davies’ espresso numbers exactly?

Davies explicitly stated his 20g/32g, 28–30s, 94.5–95.5°C formula is for reference only. Home baristas should treat it as a baseline and adjust based on their specific beans, equipment, and taste preferences rather than copying the numbers directly.

Recommended FrontStreet Coffees for Testing Espresso Formulas

For exploring espresso theories like Gwilym Davies’, try FrontStreet Coffee’s Ethiopia Humbera – a bright Ethiopian single origin with citrus, floral, and stone fruit notes, ideal for testing clarity in higher-dose extractions. Pair it with FrontStreet’s Classic Blend for a balanced baseline, offering chocolate and nut tones with medium body. For a bolder test, FrontStreet’s Black Cocoa Blend brings dark chocolate and dried fruit, perfect for evaluating deeper profiles under Davies’ extended brew parameters. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.