Single-Wall Filters

Comparing Single-Wall Filters and Double-Wall Filters for Espresso Perfection

The art of crafting a truly exceptional espresso rests significantly on the uniformity of its coffee grinds. Among the array of choices in filter baskets – varying in sizes, shapes, and depths – the decision between pressurized and non-pressurized options further complicates matters. Differentiating characteristics extend to ridged or smooth designs, as well as their individual capacities. In this blog, we look into the comparison of single-wall filters and double-wall filters, aiding you in making an informed choice for your espresso endeavors.

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Single Wall vs. Double Wall Filters: What Sets Them Apart?

  1. Single-Wall Filters: These filters are designed for brewing a single cup of espresso, accommodating 7-12 grams of coffee grounds. Unlike their double-wall counterparts, they lack a secondary wall. This “single-wall” design means that they don’t generate pressure during the brewing process. This style of filter is favored for its precision in producing single, potent cups of espresso. 

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  2. Double-Wall Filters: These filters can brew larger shots of espresso, containing 14 to 21 grams of coffee grounds. The key distinction is an additional wall integrated into their structure, leading to the classification as “pressurized.” This extra layer elevates pressure within the filter basket, resulting in a smoother extraction process. The double-wall design is especially useful for creating more generous servings of espresso while maintaining consistent quality.

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Choosing the Right Filter:

1.Controlled Extraction: Professional baristas often favor single-wall filters due to their precise extraction control. While crafting them demands more time and effort, the outcomes justify the investment.

2. Pressurized Power: Double-wall filters, also known as pressurized baskets, boost brewing by manipulating pressure. This feature is beneficial when dealing with uneven or coarser grinds.

3. Taste Tailoring: Single-wall filters work best with freshly ground coffee, while double-wall filters can accommodate pre-ground or older beans. Customizing shots is possible with both types through adjusting tamping pressure and coffee grounds.

4. Coarse vs. Fine Grinds: Double-wall filters are adept at handling uneven or coarse grinds, regulating the pressure for a consistent extraction. In contrast, a single-wall filter struggles with coarse grinds, leading to underwhelming flavors.


Choosing between single-wall and double-wall filters hinges on the level of control and customization you desire. Professional baristas often prefer the precision offered by single-wall filters, while double-wall filters are ideal for beginners or those working with older coffee grounds. Understanding the nuances of each filter type empowers you to brew your perfect cup of espresso, tailored to your preferences and skill level.

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