This article serves as a clear and direct reference for home coffee enthusiasts, detailing how to use a semi-automatic espresso machine to make common coffee drinks. All beverages are based on a standard shot of espresso as the flavor foundation.

Any coffee enthusiasts switch to a bottomless portafilter (naked portafilter) to achieve a more professional extraction and visual experience. However, after using a bottomless portafilter, many people notice a significant reduction in coffee crema and even experience unstable extraction.

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WDT (Weiss Distribution Technique) tools are designed to improve the distribution of coffee grounds in your portafilter before tamping. However, if the needles on your WDT tool are too tightly packed together, they may unintentionally push the coffee grounds to the side, creating hidden clumps that can negatively affect the consistency and quality of your espresso. These clumps can cause uneven extraction, resulting in under-extracted or over-extracted flavors in your cup.

The bottomless portafilter is a practical tool for espresso brewing, removing the spouts of traditional portafilters to allow coffee to flow directly from the basket. Its open design not only makes the extraction process visible but also helps diagnose issues like channeling and uneven tamping, improving extraction quality and flavor. Whether you're a home coffee enthusiast or a professional barista, the bottomless portafilter is a must-have tool for perfect espresso.

The WDT tool (Weiss Distribution Technique) improves espresso extraction by stirring coffee grounds to eliminate clumping and uneven distribution, reducing channeling and enhancing extraction uniformity. Whether you're a home coffee enthusiast or a professional barista, the WDT tool is a low-cost, high-reward essential that helps achieve a more balanced and flavorful brew. Try the WDT tool and make every cup of coffee closer to perfection!