Are You Using the Right One?
In pour-over coffee, filter paper may seem like a small detail. But in reality, it plays a big role in extraction and overall brew quality.
One of the most important factors it affects is brew speed (flow rate) — something many coffee users often overlook.
What Is Brew Speed (Flow Rate)?
Brew speed, or flow rate, is how fast water passes through the coffee grounds and the filter paper.
- If water flows too fast → under-extraction → weak, flat coffee
- If water flows too slow → over-extraction → bitter, harsh taste
For most pour-over setups, a typical brew time is around 2.5 to 4 minutes for 150 ml, depending on grind size, beans, and pouring method.
How Filter Shape Affects Brew Speed
Different filter paper shapes create different flow patterns.
Trapezoid Filters (101 / 102 / 104)
These filters have a flat bottom and usually work with drippers like Melitta.
Water flows through a relatively small outlet at the bottom. This slows down the flow slightly, allowing more contact time between water and coffee grounds.
Result:
- Slower flow rate
- More stable extraction
- Easier for beginners
Cone Filters (V01 / V02 / Wave)
Cone-shaped filters guide water toward a single point, allowing faster drainage.
V01 (1–2 cups)
- Single large opening
- Flow mainly controlled by grind size
V02 (1–4 cups)
- Larger size
- Slightly faster flow
Wave (155 / 185)
- Flat bottom with multiple holes
- More even and stable flow
Result:
- Faster flow rate
- More control needed
- More sensitive to pouring technique
How Filter Material Affects Flow Rate
Besides shape, the material of the coffee filter paper also affects brewing.
Bleached white filter paper
- Faster flow
- Cleaner taste
- No paper flavor
Unbleached brown filter paper
- Slightly slower flow
- May have light paper taste if not rinsed
Metal or nylon filters (non-paper)
- Fastest flow
- More oils in the cup
- Fuller body
Simple Brewing Tip
Always rinse your filter paper with hot water before brewing.
This helps:
- Remove paper taste
- Fix the filter in place
- Improve flow consistency
Why Filter Paper Quality Matters
Not all coffee filter papers perform the same.
Good filter paper should provide:
- Stable and consistent flow rate
- Clean taste with no paper flavor
- Strong wet strength (no breaking during brewing)
- Even pore structure for balanced extraction
Our coffee filter papers are made from food-grade wood pulp and designed for consistent performance. The pore structure is carefully controlled to support stable flow and clear flavor.
They are compatible with common drippers like Hario V60, Kalita Wave, and Melitta, and available in different sizes and shapes.
Final Thoughts
Choosing the right coffee filter paper is not just a small detail — it directly affects how your coffee tastes.
Once your grind size and pouring method are stable, try changing the filter paper. You may notice clear differences in flow speed and flavor.
That’s part of what makes pour-over coffee so interesting.
Happy brewing ☕
