How it's different

Water Revived Through Porosity

Our bodies, made up of 60% water desires water that is healthy and free of impurities.

With cerapotta, water is reborn and revived with deliciousness

  • Flavors visibly change through invisible pores.

    Porous materials with pores finer than a strand of hair, at 5 micrometers (μm), filter out impurities, enhancing the overall taste of the beverage. This brewing method allows for easy adjustment of strength and flavor to suit individual preferences, whether deep or light. Capable of brewing 1 to 4 cups at a time, it's perfect for savoring alone or enjoying with others.

  • Easy Maintenance

    After use, maintenance is as simple as rinsing with water. If you notice the drip speed slowing down or the taste becoming more acidic, it's a sign that the filter is clogged and extraction efficiency has decreased, indicating the need for "maintenance". Maintenance can be easily done by boiling or using a microwave. The material's inherent anti-fouling effect makes cleaning straightforward.

    Learn More 

  • Reduces Impurities but Also Environmental Issues

    By eliminating the need for paper filters, cerapotta contributes to waste reduction and lessens environmental impact. This reflects the artisans' desire to create products while valuing precious materials. With easy maintenance and nearly perpetual usability, cerapotta offers an eco-friendly way to take part in a daily ritual.

  • Reliable Tradition, Reliable Japanese Technology

    Manufactured with the 400-year tradition of Nagasaki Hasami ware and the most advanced technology in porous ceramic production, cerapotta is handcrafted by artisans. Through the processes of molding, drying, and kiln firing, experience the quality of Japanese craftsmanship through its texture, sound, taste, and aroma.

Water Sommelier Taste Testing

We asked experts in the field of water tasting and analysis to test the cerapotta ceramic coffee filter. Each member of the panel was a JASA (Japan Aqua Sommelier Association) certified aqua sommelier with a deep knowledge of how different factors can affect water's quality, flavor, and value.
They tasted tap water, mineral water, and coffee, both with and without the filter, and reported on their findings.

Tasting Criteria

  • Tap water, mineral water, and coffee were tested for flavor, aroma, texture, appearance, and other factors. Each drink was tasted first without, then with, cerapotta. The following results describe the differences the filter made.
  • Results are based on a sensory evaluation. Average values from scores given by three tasters shown.
Tap Water (Soft)

Tap Water (Soft)

  • Irritant odors (chlorine, etc.) were reduced.
  • Odd-tasting elements were removed, allowing the natural sweetness to become more prominent.
  • Rough deposits were eliminated for a smoother texture and more pleasing aftertaste.
  • Softer, smoother texture, with a lingering sweet aftertaste.
  • All testers noticed a more balanced flavor profile overall.
  • Smell, saltiness, bitterness, acridity, and metallic aftertaste were reduced.

All other factors gained higher scores as a result.

Negative factors were reduced, bringing out the water’s natural sweetness and aftertaste.

Mineral Water (Hard)

Mineral Water (Hard)

  • Mild, sweet flavor.
  • Smoother, more mellow and thicker texture was reported.
  • Remove mellow texture.
  • Essential flavor of the water was increased.
  • Saltiness, bitterness, and acridity were reduced.

All other factors gained higher scores as a result.

While the difference was less pronounced, the filter helped improve mellowness and texture for a more balanced flavor profile.

Coffee

Coffee

  • The filter has the most dramatic effect on coffee compared to tap and mineral water.
  • Improved the coffee’s soft, mellow texture.
  • Eliminated odd, off-flavor elements.
  • Sweet and sour flavors became more pronounced.
  • Enhanced balance between bitterness, sourness, and aroma.
  • Using the paper filter produced a light, refreshing brew with a bitter flavor; cerapotta, however, also brought out sweeter flavor elements.
  • A rich texture with good body.

Less bitter and refreshing, but all other factors gained higher scores.

Produced a better balance between bitterness, sourness, and aroma, while bringing out other flavors for a richer, deeper taste overall.

Durability of cerapotta Filters

To ensure the cerapotta filter meets the highest standards of durability, we've conducted thorough comparisons of its resistance to impact.

Our tests involved comparing the durability of our porous ceramic cerapotta filters against other ceramic materials of identical shape and thickness. The findings were unequivocal: cerapotta filters showcased a remarkable strength, being 140% more resistant to impact than their ceramic counterparts.

Moreover, it's essential to point out that cerapotta is crafted using alumina, a material renowned for its exceptional hardness. This endows our filters with a durability that is on par with, if not exceeding, that of standard ceramic mugs. This robust construction ensures that cerapotta filters are not only durable but also capable of enduring the regular use and demands of daily coffee brewing without succumbing to breakage easily.