How to Grind, Dose, and Tamp for Specialty Espresso

Ever pulled a shot that tasted sour, bitter, or just weak—and weren’t sure whether it was the grind, the dose, or how hard you tamped? You’re not alone. Most home baristas and even some shop pros struggle to dial in espresso consistently because small variables in grind size, dose, and tamp make a huge difference in extraction.

Here’s the short answer: for espresso, a typical single shot uses around 9g of coffee and a double about 16g—but the ideal dose depends on your basket. Grind size is adjusted based on taste, not a fixed number, and tamp pressure should feel firm and even, usually around 30 pounds, though the real control comes from adjusting grind and dose first.

Understanding Grind Size: Why the Setting Isn’t Everything

If you’ve asked, “What setting should I use on my grinder?” the honest answer is: it depends. The numbered setting on your grinder (like those on an XX brand) only tells you which direction is finer or coarser—it’s not a universal standard. The same number on different grinders, or even the same model from a different production batch, can produce noticeably different grind sizes. That setting only works as a relative guide once you’ve found your ideal grind size for a specific coffee, roast, and brewing setup.

To improve consistency across grinders, develop a tactile sense of grind texture. Once you find a grind that works, pinch or rub a small amount between your fingers. Over time, you’ll learn to recognize when the grind feels too coarse or too fine—even on a different machine. This tactile feedback becomes invaluable when switching grinders or troubleshooting shots.

Dosing: How Much Coffee Goes in a Single or Double Shot?

How many grams of coffee should you use? The short answer is: singles often use around 9g and doubles about 16g. But these numbers aren’t universal. Your ideal dose depends on your portafilter basket size, the coffee’s density, roast level, and desired extraction. Many baristas settle on a dose that fits their basket and workflow, then adjust other variables around it.

It’s common practice to use slightly more coffee for a coarser grind and less for a finer one, since grind size and dose both influence extraction pressure and flow rate. You can start with a standard single dose of 9g or double of 16g, but be prepared to tweak based on your basket capacity and the shot’s behaviour.

Tamping: Why Pressure Matters Less Than You Think

Tamping seems like the most mechanical part of pulling a shot, but it’s also the most variable. Unlike grind size or dose, tamp pressure isn’t measured in grams—it’s done by feel. Even experienced baristas need a moment to get their tamp right, especially after a break or on a different machine. The goal is a level, compact puck with even pressure, typically around 30 pounds, but the exact number isn’t as critical as the consistency and quality of the tamp.

In reality, tamp pressure is often used to compensate for other variables. If your grind is slightly off or your dose inconsistent, adjusting your tamp pressure—by going a bit firmer or lighter—can help stabilise extraction. But the real fix is nailing grind size and dose first, then using tamp pressure as the final fine-tuning tool.

How Coffee Bean Type Changes the Game

Different coffees—whether they’re from Ethiopia, Colombia, or Brazil—vary in density, hardness, and bean structure. A light roast Ethiopian Yirgacheffe will grind differently from a dark roasted Brazilian bean, even on the same setting. That means the grind size, dose, and tamp that worked perfectly for one coffee might fall apart with another.

Roast level also plays a big role. Lighter roasts are denser and harder to grind, often requiring a finer setting to slow extraction. Darker roasts are more brittle and may need a coarser grind to avoid over-extraction. This is why many professional cafés dedicate specific grinders to certain beans, ensuring consistency across service.

The takeaway? Once you’ve chosen a coffee, set your dose based on basket size, adjust grind size to taste, then use tamp pressure to fine-tune. Changing beans? Expect to revisit all three settings.

Frequently Asked Questions

What’s the best grind size for espresso?

There’s no universal “best” grind size—it depends on your coffee, roast level, and equipment. Start with a baseline setting (often medium-fine), then adjust based on taste. If your espresso pulls too fast and tastes sour, grind finer. If it’s slow and bitter, grind coarser. Use the grinder’s numbered settings as a starting point, not a rule.

How many grams of coffee should I use for a single or double shot?

A standard single shot typically uses around 9g, and a double about 16g. However, the exact dose should match your basket size and coffee density. Always fit the dose to your portafilter, not the other way around.

How hard should I tamp espresso?

Aim for a firm, even tamp—most baristas use around 30 pounds of pressure. The key is consistency, not an exact number. Use enough pressure to create a level, compact puck, and adjust only after grind size and dose are dialed in.

Why does my espresso taste different when I change grinders?

Even if you use the same setting, different grinders produce different grind sizes. The numbered setting is only a relative guide on each machine. When switching grinders, you’ll need to adjust grind size, dose, and possibly tamp to match your preferred extraction.

Does roast level affect grind size or dose?

Yes. Lighter roasts are denser and often require a finer grind and sometimes a slightly higher dose. Darker roasts are more porous and may need a coarser grind. Always adjust your grind and dose when switching roast profiles.

Can I use the same grind setting for different coffees?

Usually not. Each coffee’s density, origin, and roast level affects how it grinds and extracts. Even if the setting looks the same, the actual particle size may vary enough to change your shot. Always dial in grind size for each new coffee.

Recommended FrontStreet Beans for Espresso Dialling

For mastering grind, dose, and tamp, try FrontStreet Coffee’s Ethiopia Guji Konga—bright and juicy with citrus and floral notes, ideal for fine-tuning extraction. Pair it with FrontStreet’s Guatemala Antigua for a balanced profile of chocolate and spice, great for testing dose changes. For darker roasts, the FrontStreet Brazil Cerrado offers nutty sweetness and heavy body, useful for coarse grind practice. All three beans respond distinctly to grind adjustments, making them excellent for honing your espresso technique. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.