Kalita & Tsubame Earth Series - WDS-155/185 Coffee Strainer

summary

This product is a Kalita & Tsubame Earth Series WDS-155/185 stainless steel filter cup, which is a professional-grade coffee brewing tool designed for the pursuit of precision and stability. Its core value lies in winning the quality certification of "Made in TSUBAME" in Japan, ensuring that the products are manufactured by Yan Sanjo, Niigata Prefecture, the world's top metal craftsmanship center. Its high-quality stainless steel material has excellent heat conduction efficiency, which helps maintain water temperature stability throughout the brewing process, thereby achieving pure and uniform extraction. Its high durability and corrosion resistance ensure the long-term life of the product without the risk of damage. It is suitable for high frequency commercial or personal use, and is also a reliable choice for outdoor use. Combined with Kalita Wave's signature flat bottom three-hole structure, WDS-155/185 can effectively improve the brightness and repeatability of the brewing flavor, making it an ideal equipment for advanced enthusiasts and baristas.

Features

1. Made in TSUBAME This product has won the "Made in TSUBAME" quality certification, which is not only a proof of origin, but also a commitment to world-class craftsmanship. From the hundreds of years of metal processing history in Yansanjo area of Niigata Prefecture, Japan, local workers are famous all over the world for their exquisite polishing and integrated molding technology. With this certification, every detail of the filter cup has reached the ultimate quality standard, from the purity of the material to the edge treatment, which is the dual guarantee of credibility and craftsmanship spirit.
2. Professional-grade thermodynamic performance and flavor are made of high-quality stainless steel, and its excellent heat conduction efficiency allows the filter cup to quickly and evenly reach the ideal temperature when preheated. During the brewing process, it can effectively maintain the water temperature stability, avoid uneven extraction caused by temperature fluctuations, and thus prevent excessive extraction from odor and bitterness. This stable thermodynamic property can more fully extract the flower and fruit aroma and bright acidity of fine coffee beans, bringing a purer and richer flavor.
3. Indestructible durability and long-term investment value Unlike the fragility of traditional ceramic or glass filter cups, this stainless steel filter cup has extremely high mechanical strength and can calmly deal with bumps and even accidental falls in daily use, with almost no risk of damage. This makes it a durable product that can be trusted for a long time, especially suitable for high-frequency business environments, busy home kitchens, or carried to outdoor camping, eliminating the psychological burden of users on the equipment.
4. High fault tolerance Kalita Wave Classic Construction The iconic flat bottom design provides a wide and even layer of powder for coffee powder, while the three drain holes at the bottom precisely control the extraction flow rate. This combination greatly reduces the "channel effect" caused by the unstable water injection method, allowing the water flow to soak the coffee powder more gently and comprehensively. Therefore, it is easier for experienced baristas to brew a cup of high-quality coffee with balanced flavor and stable production.
5. "Mori" matte design that integrates natural aesthetics The unique "Mori" (Mori) matte green coating injects a gentle natural atmosphere into the cold metal texture, creating a quiet and professional visual style. Compared with mirror polishing, the matte surface is less likely to leave fingerprints and water stains, and is easier to maintain on a daily basis. It is not only a high-performance brewing tool, but also a design product that can enhance the overall texture of the coffee corner.

Product Information

Core technology: In-depth analysis of "Made in TSUBAME"

"Made in TSUBAME" is not only a label of origin, it represents a craftsman's heritage originated from the Edo period of Japan and has a history of more than 400 years. The Yansanjo area in Niigata Prefecture started with the manufacture of "Hannails" (Japanese nails), and gradually developed into a major city in metal processing technology in Japan and even the world.

Historical heritage and technological evolution: Local craftsmen combine traditional forging technology with modern precision polishing, grinding and forming processes. From tableware used at Nobel Prize dinners to the supply of Apple's product parts, Yan Sanzhao's metal products are famous all over the world for their ultimate details and reliable quality.

The value of certification: To obtain this certification, the product must pass an independent committee composed of scholars, industrial designers and researchers to ensure that its design, quality and safety meet the highest standards in the Yansan area. Therefore, this logo is a triple guarantee of product origin, craftsmanship and quality.

Material Science: Stainless Steel vs. Extract Physics of Traditional Materials

The choice of stainless steel as the filter cup material is based on its precise control of coffee extraction and change.

1.⁠ Heat conduction efficiency: The thermal conductivity of stainless steel (approximately 15-20 W/m·K) is much higher than that of ceramics (approximately 1.5-3 W/m·K). This means that when preheating, the stainless steel filter cup can reach the same temperature as hot water faster and evenly, reducing the waste of preheating time and water temperature.

Temperature stability: During continuous water injection (or segmented water injection), a fully preheated, highly thermally conductive filter cup can more effectively transfer heat to coffee powder and resist temperature drops caused by the environment. This helps maintain the entire powder layer at an extremely stable and ideal extraction temperature range (typically 90-96°C), resulting in a more complete and uniform material extraction.

Flavor influence: This stable high-temperature environment usually brings a brighter and cleaner flavor performance, and the floral aroma and delicate acidity of the coffee beans themselves are more easily highlighted. In contrast, ceramic filter cups that have slower heating tend to have a more mellow and round flavor.

2.⁠ Long-term durability and maintenance: High-quality stainless steel has excellent corrosion resistance and impact resistance. It does not break due to thermal shock or accidental collision like ceramics or glass, and has little upper limit of service life. Its smooth surface does not easily retain coffee grease, is easy to clean, and can maintain hygiene for a long time.

Structural design: Kalita Wave flat bottom three holes

WDS-155/185 follows the classic structure of the Kalita Wave series, designed to minimize the impact of artificial technology and improve the repeatability of brewing. The flat bottom and three accurately calculated drain holes together create a stable extraction environment that effectively reduces the risk of "channel effects" and allows even beginners to easily obtain a balanced, ideal cup of coffee.

Product Specifications