Will a Different Portafilter Size Really Change Your Espresso Quality?

Ever wondered why some espresso shots taste smoother or richer than others?

When I first started brewing coffee at home, I assumed that quality beans and good technique were all I needed. But I soon learned something surprising—the size of your portafilter actually matters more than you'd think.

Why Does Portafilter Size Matter?

I quickly noticed a difference when moving from a smaller 51mm portafilter to a 58mm one. At first, I didn't think much of it. But after a few shots, I noticed clearer flavours and more balanced extraction. Smaller portafilters tend to give espresso that's slightly different—often more concentrated but sometimes unevenly extracted.

A study published in Food Hydrocolloids backs this up, highlighting how extraction can vary significantly based on how evenly water moves through the coffee puck. With larger portafilters, the coffee bed tends to be wider and thinner, helping water flow evenly. This generally results in better extraction, consistency, and improved taste.

It's All About Consistency

After countless brews at home, I've found that the 58mm portafilter gives me more consistent results. When you brew espresso, consistency isn't just nice—it's crucial. The reason? Small variations can dramatically shift the taste from a deliciously balanced cup to something sour or bitter.

Here's the good news: achieving consistency isn't overly complicated. For instance, using a self-leveling tamper ensures a uniform tamp, making your extraction even better.

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Portafilter Sizes and Your Espresso Machine

Now, your espresso machine plays a big part too. Machines from Breville, Delonghi, or Rocket usually specify a particular portafilter size. For example, many Breville machines favour a 54mm portafilter, while professional-grade machines like Rocket or ECM often stick to 58mm.

Wondering what portafilter size suits your espresso machine? Check out our range of barista kits, which are specially matched to different espresso machine brands.

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Flavour Clarity and Extraction Quality

Another crucial point I came across—larger baskets in bigger portafilters typically yield clearer, more nuanced flavour profiles. According to research featured in Scientific Reports, optimal extraction is greatly influenced by the coffee puck's depth and diameter.

For home baristas who care deeply about flavour notes—say, the sweet chocolate undertones or subtle fruity acidity—a larger portafilter might be your best friend.

If flavour accuracy is your goal, consider pairing your portafilter with a precision basket. These baskets provide even extraction, highlighting the subtleties in your espresso.

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But Does Bigger Always Mean Better?

While larger portafilters have clear advantages, it doesn't mean smaller ones are inherently bad. If you have a compact home setup or prefer a more concentrated espresso, smaller baskets might suit your style. However, expect slightly less forgiving results in terms of consistency and flavour.

Through reading countless discussions online, including detailed conversations on Reddit, I found many home baristas echo my experience. Many users noted significant improvements when upgrading their portafilter size, even if just from 51mm to 54mm.

What About the Accessories?

Accessories like bottomless portafilters are popular not just because they look great, but because they show you exactly how evenly your espresso extracts. A larger portafilter paired with accessories such as a WDT tool significantly reduces channelling, helping you make espresso shots as perfect as those in your favourite café.

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Choosing the Right Size for You

Ultimately, choosing a portafilter size comes down to what you value most in your coffee-making experience. If you're after consistently balanced, nuanced espresso shots, a larger portafilter is likely the way to go. But if space or a richer, punchier shot is your priority, then smaller options will work perfectly well.

Still not sure? Feel free to contact us for advice on matching the best gear with your machine and your coffee preferences.

Ready to Upgrade Your Portafilter?

Take a moment to think about your coffee experience. What do you really want from your espresso? Once you figure that out, choosing your portafilter size—and enjoying better espresso—becomes much simpler.

Written By Laurie Nance

I'm the founder of Brewedco Coffee™, passionate about coffee, coffee tools, and helping others better understand how to utilize them. With years of experience in the coffee industry, I love sharing insights on brewing techniques, choosing the right equipment, and the science behind making the perfect cup.