Walnut Coffee Dosing Cup and RDT Coffee Spritzer

The KNODOS Walnut Coffee Dosing Cup and RDT Spritzer Set pairs a solid walnut dosing cup with a fine-mist spray bottle for precise, static-free single dosing. Weigh your beans in the cup, spray one or two mists of water to neutralize static, then tip them into your grinder. The cup holds 30g+ — enough for a double espresso — and the 8ml aluminum bottle refills in seconds. Reduces mess, eliminates grinder retention, and gives you full control over every dose. Works with any grinder.

What is a Coffee Dosing Cup

A dosing cup is a small bowl or tray used to weigh out a single dose of coffee beans before grinding. Instead of pouring beans directly into the hopper, you weigh your dose on a scale in the cup, then tip the beans into the grinder. This gives you precise control over how much coffee goes into each shot — no guessing, no waste, no leftover beans in the hopper going stale.

What is RDT and Why It Matters

RDT stands for Ross Droplet Technique — a method where you spray a small amount of water onto your coffee beans before grinding to reduce static. Static causes freshly ground coffee to cling to burrs, the grinder chute, and the dosing container instead of falling cleanly into the portafilter. One or two sprays from the included bottle is enough. The result is cleaner grinding, less retention inside the grinder, and more grounds landing in your portafilter instead of on the counter.

Walnut Cup with 30g+ Capacity

The dosing cup is made from solid walnut — smooth inside for easy bean transfer, wide enough to sit on a coffee scale, and deep enough to hold a full double shot dose. The natural grain looks clean on the counter and matches other KNODOS walnut accessories.

RDT Spray Bottle

The included 8ml aluminum and glass spray bottle produces a fine mist with a twist cap. One or two sprays per dose is all you need. The bottle is small enough to keep next to your grinder and refills with tap water in seconds.

How to Use — Step by Step

1. Place the walnut dosing cup on your coffee scale and tare to zero.

2. Weigh your desired dose of coffee beans into the cup.

3. Spray one or two mists of water onto the beans using the RDT bottle.

4. Tip the beans from the cup into your grinder.

5. Grind — the sprayed beans produce less static and fewer grounds stick inside the grinder.

6. Transfer the grounds to your portafilter and proceed with your workflow.

Compatibility

Universal — works with any espresso grinder, manual grinder, or single-dose grinder. Not size-specific. The dosing cup fits on standard coffee scales including Acaia, Timemore, and similar models.

What's Included

• 1x KNODOS Walnut Coffee Dosing Cup (30g+ capacity)

• 1x RDT Spray Bottle (8ml, aluminum and glass)

Frequently Asked Questions

Do I need a dosing cup if my grinder has a hopper?

If you grind the same coffee every day and do not care about precise dosing, a hopper works fine. But if you switch beans, want exact dose control, or want to keep beans fresh by not leaving them in a hopper, a dosing cup is essential for single-dosing workflow.

Does RDT affect the taste of espresso?

No. The amount of water added by RDT is negligible — less than a drop per dose. It does not affect extraction, flavor, or grind consistency. It only reduces static.

Will this cup fit on my coffee scale?

The cup is designed to sit flat on standard coffee scales including the KNODOS Smart Scale, Acaia, Timemore, and similar models.

Does the walnut cup match KNODOS walnut tampers and stations?

Yes. The cup uses the same walnut as other KNODOS walnut accessories. They look consistent together on the counter.