Enhancing Espresso Extraction Elevate your espresso brewing experience with our puck paper filters. These innovative filters have been designed to boost the quality of your espresso extraction, resulting in an impressive increase in both average extraction and total dissolved solids (TDS). Optimal Extraction with Finer Grind For those who prefer a finer grind size, our paper filters offer a solution that prevents coffee grounds from clogging up the portafilter basket holes. Placing a paper filter at the base of the coffee bed ensures a smoother extraction process, resulting in a more refined and satisfying espresso. Note: When placing a paper filter at the bottom, we recommend downsizing for a better fit since the base of most baskets is smaller. Crafted from Natural Materials Our espresso portafilter paper filters are meticulously handcrafted from natural virgin Japanese pulp, devoid of harmful chemicals. These filters boast a thickness that exceeds conventional options by 20-30%, rendering them exceptionally resilient even under high brewing temperatures. Maintain Espresso Machine Purity Our espresso portafilter paper filters act as a safeguard against coffee seeping back into the machine during backflushing. This prevents the undesirable accumulation of coffee residue within the machine's pipes, ensuring the continued smooth operation of your espresso setup.