How the German RS-16 Glass Filter Brings Out True Coffee Flavor
If you’ve ever wondered why your carefully brewed pour-over doesn’t taste quite like the coffee itself—why some brightness is muted or strange paper notes creep in—you’re not alone. Every filter—paper, metal, or cloth—alters what ends up in your cup. Some block essential aromatic compounds; others add unwanted flavors.
The solution? The RS-16. This is a pure glass pour-over filter made entirely without paper, metal mesh, or fabric. Designed and produced by Germany’s Coffee Consulate, it lets coffee express its truest flavor—nothing added, nothing blocked.
What Is the RS-16 Pour-Over Filter?
The RS-16 is a one-piece, pure glass pour-over filter designed by Germany’s Coffee Consulate (German: Coffee Consulate). It features a base with uniformly sized holes and comes with a matching metal support plate. There’s no paper, no metal mesh, and no cloth—just glass. This design minimizes any material-based interference during extraction, aiming to brew coffee that tastes more like the bean itself.
Why Filter Material Affects Coffee Flavor
Different pour-over filters—whether paper, metal, or cloth—impact what gets extracted and what doesn’t. Paper blocks certain oils and aromatic compounds. Metal can slightly alter brew speed or temperature. Cloth can introduce texture or absorb volatile aromas. All of these influence the final cup, sometimes muting acidity, hiding sweetness, or adding unintended flavors.
The RS-16 was created to remove those variables. By using only glass, it ensures that nothing from the filter—no absorption, no restriction, no added taste—comes between you and the coffee’s inherent profile.
How to Brew With the RS-16: Step-by-Step
Coffee Consulate recommends the following parameters for the RS-16: 16 grams of coffee, a water temperature between 90–93°C, and a total brew water volume of 200 ml. Here’s how to execute it:
- Weigh out 16 grams of coffee beans.
- Grind the beans (you can grind directly into the RS-16 if preferred).
- Assemble the RS-16 filter with its metal filter holder and place the setup on your scale.
- Pour 100 ml of hot water slowly over the grounds to initiate the bloom phase.
- Once the initial bloom settles, add 50 ml more water.
- Finally, pour the remaining 50 ml to complete the brew.
- Allow full extraction before serving. Take note of how the coffee tastes compared to your usual brew.
Frequently Asked Questions
What is the RS-16 coffee filter made of?
The RS-16 is made entirely of glass, including the filter body and base with uniformly distributed holes. It does not use paper, metal, or cloth. It also includes a separate metal support plate for stability during brewing.
Who makes the RS-16 filter?
The RS-16 is designed and produced by Germany’s Coffee Consulate (German: Coffee Consulate), a specialty coffee education and equipment organization.
What grind size should I use for the RS-16?
The article does not specify an exact grind size, but for a standard 16g dose and 200ml pour-over using a three-pour method, a medium-fine grind similar to table salt is typically appropriate.
What water temperature is recommended for the RS-16?
Coffee Consulate recommends a water temperature between 90–93°C when brewing with the RS-16.
How much coffee and water do I use with the RS-16?
The suggested brew recipe is 16 grams of coffee and 200 milliliters of water. The water is added in three pours: 100 ml for bloom, then 50 ml, then another 50 ml.
Does the RS-16 filter change the taste of coffee compared to paper filters?
Yes. Because the RS-16 is made of pure glass with no paper, metal, or cloth, it allows the coffee’s natural flavors to come through without being altered or muted by filter materials.
Recommended FrontStreet Beans for Clarity-Focused Pour-Over
For use with the RS-16, try FrontStreet Coffee’s Ethiopia Huakui, known for its vibrant citrus, floral notes, and sweet lemon finish—ideal for highlighting clarity. Also consider Yirgacheffe, offering delicate jasmine and tropical fruit, or the Kenya Little Tomato, with intense berries and winey acidity. These single-origin beans let the RS-16’s design shine. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.
FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。
Important Notice :
前街咖啡 FrontStreet Coffee has moved to new addredd:
FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou
Tel:020 38364473
