☕ Graycano Filter GC01 – Premium Japanese Conical Filter Papers (100 Pack)

Designed for Sweet, Clean & Balanced Coffee

Great coffee starts long before the water touches the grounds.

The Graycano Filter GC01 has been carefully designed to work in harmony with the unique geometry of the Graycano Dripper, delivering clean cups, balanced extractions, and beautifully articulated flavour clarity. Crafted in Japan from premium wood pulp, these high-quality filter papers offer a medium-to-slow flow rate that allows your coffee's sweetness, complexity, and origin character to shine.

Whether you're brewing a delicate washed Ethiopian, a juicy natural process coffee, or your favourite everyday filter blend, the GC01 helps unlock the full potential of every bean.

Premium Japanese Craftsmanship

Japan has long been regarded as a global leader in coffee filter paper manufacturing, and the GC01 proudly continues that tradition.

Made from carefully selected natural wood pulp, these filters provide:

✔ Excellent filtration

✔ Minimal paper taste

✔ Consistent flow characteristics

✔ Clean cup clarity

✔ High durability during brewing

The result is a filter paper you can trust for daily brewing and precision-focused coffee exploration alike.

Medium-to-Slow Flow for Sweetness & Balance

The flow rate of a filter paper has a significant impact on extraction.

The Graycano Filter GC01 is engineered with a carefully balanced medium-to-slow flow profile, allowing sufficient contact time between water and coffee for a more complete extraction.

This often translates to:

☕ Enhanced sweetness

☕ Improved body

☕ Greater flavour clarity

☕ Balanced acidity

☕ Better expression of terroir and processing

Rather than rushing water through the coffee bed, the GC01 encourages a controlled extraction that highlights the nuances specialty coffee lovers seek.

Optimised for the Graycano Dripper

While compatible with many cone-shaped brewers, the GC01 was specifically developed around the geometry of the Graycano Dripper.

The precise fit supports:

✔ Even water distribution

✔ Stable drawdown times

✔ Consistent extraction

✔ Reduced channeling

✔ Repeatable brewing results

The result is a brewing experience that feels intuitive, predictable, and remarkably consistent.

Compatible with Other Cone Drippers

The GC01 is a size 02 conical filter and can also be used in many popular cone brewers, including:

• Graycano Dripper
• Hario V60 Size 02
• Most 1–2 cup cone drippers
• Other compatible 02-size cone brewers

While performance remains excellent across multiple brewers, extraction characteristics have been specifically optimised for the Graycano system.

Brewing Tip from the CoffeeNose

Always rinse your filter paper before brewing.

A quick rinse with hot water:

✔ Removes any residual paper taste

✔ Pre-heats your dripper

✔ Warms your server or cup

✔ Promotes smoother water flow

✔ Improves extraction consistency

It takes only a few seconds and makes a noticeable difference in cup quality.

Compostable & Environmentally Friendly

The Filter GC01 is made from natural wood pulp and is fully compostable.

After brewing, simply add the used filter and coffee grounds directly to your compost bin or green waste stream where accepted.

Good coffee and responsible disposal can go hand in hand.

Product Specifications

Product: Graycano Filter GC01

Filter Type: Conical Paper Filter

Size: 02 (1–2 Cup)

Material: Premium Japanese Wood Pulp

Flow Rate: Medium to Slow

Compatibility:

• Graycano Dripper
• Hario V60 Size 02
• Most 02 cone brewers

Quantity: 100 Filters

Country of Origin: Japan

Compostable: Yes

Why We Like It at WB.coffee

Filter papers are often overlooked, but they have a surprisingly large impact on flavour.

What we appreciate about the Graycano GC01 is its ability to slow the brew just enough to bring out sweetness and complexity without becoming overly restrictive. The paper quality is excellent, the fit inside the Graycano is spot-on, and the resulting cups are consistently clean and expressive.

For fruity single origins, floral coffees, and delicate filter roasts, these filters allow every flavour note to speak clearly.

It's one of those small upgrades that coffee geeks notice immediately and casual drinkers simply experience as "better coffee."

Coffee pairing suggestions (WB.coffee)

The Filters are great for brewing:

• FJ – Fruity & Juicy (ripe sweetness + structured body)
• Single origin naturals / experimental lots (more depth, less sharpness)
  Want a rounder daily cup? Try
  Ethiopia Guji - natural for cozy sweetness.

Try before you buy

Taste Graycano filter brews at Amsterdam Coffee Lab (Weesp). We’ll brew the same coffee as:

• standard Graycano filter 
• V60 filter
  So you can feel the difference and pick your favorite.

Do you love to taste & learn?

🍶 Coffee Omakase Tasting Experience

A guided tasting flight where cup shape, recipe, and coffee style are part of the fun.

Shop Graycano

You can find Graycano in many (online) stores. So why choose WB.coffee? 

• WB.coffee has a physical store in Weesp (Amsterdam) 
• Original products - no China knockoffs!
• We can order most Graycano products for you
• Dedicated filter coffee workshops & batchbrew masterclasses @ Amsterdam Coffee Lab 
• Original Graycano filters on stock
  
• Coffee blends tested and approved for Graycano 
• Best Price Guarantee 

You will be surprised how many knock-offs you will find online. Especially at the big e-commerce platforms that you might trust. At WB.coffee you can see the product at our store in Weesp before you buy it. Many Graycano products are used at Amsterdam Coffee Lab, so we are quite familiar with them.

Shop Graycano

WB.coffee blends are roasted fresh on order. We roast with 100% renewable energy ☀ and 0% gas. 

☕ Our Signature Blends

• FC – Fruity & Chocolaty - smooth, juicy, comforting
• FF - Fruity & Floral - elegant & aromatic ​
• FJ – Fruity & Juicy - vibrant and sweet, a filter favorite
• The Chocolatier’s Brew – Chocolate & Praline (Brazil)
• VC - Vanilla & Caramel - creamy, sweet, irresistibly smooth
•  CN - Chocolaty & Nutty (HoReCa besteseller)

🌿 Chemical-Free Decaffeinated Coffees

• AFD – Apple & Fudge Decaf - bright, cozy
• CDD – Caramel & Spices Decaf - warm, sweet

🌍 Single Origins — Limited Editions

New lots arrive throughout the year.

• Ethiopia Guji Honey & Pineapple Express – fruity & complex
• Ethiopia Natural Dimtu & Guatemala Inferno Geisha – classic profiles

Get in touch for what’s currently on the cupping table and receive personal flavour recommendations based on your taste.

🎯 Taste Before You Choose

Try four coffees at once with our Coffee Tasting Set — available in:

• Filter or Espresso
• 4 blends or 4 single origin limited editions

Prefer to experience them first?

Explore our full tasting menu @ Amsterdam Coffee Lab in Weesp, where you can try any blend (or all of them 🏃)

Order coffee

Coffee Omakase – The Ultimate Coffee Tasting Experience ☕

For the curious, the connoisseurs, and everyone who knows coffee can be more.

Have you ever walked out of a café disappointed — knowing your cup could have been so much better?

Then this experience is for you.

The Coffee Omakase @ Amsterdam Coffee Lab is a guided, multi-course coffee tasting designed for specialty coffee enthusiasts, flavor explorers, and curious coffee lovers alike.

Each session is unique, interactive, and bursting with discovery — like a live culinary performance, but for coffee.

What to Expect

During this exclusive sensory journey, you’ll:

☕ Taste a curated lineup of exceptional coffees — washed, natural, and experimental processing methods (think anaerobic, co-ferment, honey, and even wild fermentation projects).

🌸 Experience rare varietals — including legendary coffees like Geisha, and other micro-lot gems from around the world.

🔬 Explore multiple brew styles — from delicate filter brews and bold espressi to the mesmerizing syphon method.

🥄 Try your hand at cupping — slurp and taste coffee like a professional taster, discovering aromas and acidity in new ways.

🍹 Enjoy surprising coffee mocktails — creative and refreshing, crafted from the same beans you’ll taste in the lineup.

👃 Engage your senses fully — experience how the aroma, cup shape, color, and even the sound of pouring influence your flavor perception.

A Guided Journey by the CoffeeNose 👃

Led by Wouter Brunia, also known as the CoffeeNose 👃, this tasting is a deep dive into coffee flavor and sensory science.

Like a sommelier presenting fine wines, Wouter will:

• Brew each coffee live with expert precision
• Share the stories of each bean — from farm to fermentation
• Explain flavor notes, processing methods, and varietal differences
• Help you understand why your favorite coffee tastes the way it does

It’s fun for your brain, taste buds, and nose — and you’ll leave with a new appreciation for what’s in your cup.

Each Omakase is Unique

No two tastings are ever the same.

Our coffees rotate constantly and often include exclusive lots — such as Geisha, co-fermented experiments, and rare micro-lots you won’t find in cafés.

Every visit promises something unexpected, thought-provoking, and delicious.

Who It’s For

• Specialty coffee geeks craving depth and discovery
• Curious coffee lovers ready to learn (and taste!) something new
• Couples and friends looking for a unique sensory experience
• Anyone who wants to fall in love with coffee all over again

Details

📍 Location: Amsterdam Coffee Lab, Weesp

🕒 Duration: ±1.5–2 hours

👥 Group Size: Small & intimate for personal attention

🎟️ Booking: More info & reservations ⬇

Why Join?

Because coffee can be so much more than just caffeine — it’s chemistry, art, and emotion in a cup.

Join the Coffee Omakase Experience and taste what happens when curiosity meets craftsmanship.

Do you crave the excitement of discovering exquisite coffee flavors and captivating aromas? Don’t miss out on our exclusive Coffee Tasting Experience @ Amsterdam Coffee Lab, where you’ll not only indulge your senses but also gain valuable insights into the world of coffee. Join us for an unforgettable journey!

Join us for a fun and informative sensory experience revolving around coffee. During this experience you will: 

• Taste washed, natural and alternative processed coffee beans 
• Explore various varietals of Arabica coffee including the famous Gesha
• Discover different coffee brewing methods outside of standard espresso
  
• Savor surprising coffee mocktails 
• Try cupping coffee: sample your coffee by slurping it from a spoon, just like an expert coffee taster would
  
• Experience how sensory elements such as aroma, size, shape, and color of the coffee cup affect flavor perception.
  

Similar to how a knowledgeable wine sommelier educates you about the wine and presents it at the perfect temperature in the right glass, our master barista and flavor expert will expertly brew your coffee while enlightening you about the entire process, the origin of the beans, varietals, the flavor notes, and much more.  Envision it as a live cooking demonstration, but dedicated entirely to the craft of coffee brewing.

Fun for your brain, taste buds and nose!

More info & booking ⬇

More info & booking