How to Use a Cold Drip Tower for Smooth Coffee
By Coffee Machine Warehouse | Published: 2026-10-25
Category: How-to Guides
Learn how to use a cold drip tower to make smooth, concentrated cold brew at home. Step-by-step guide with tips for the Tiamo HG6329 domestic unit.
Quick answer
Set up your cold drip tower, add ice water and coarse coffee grounds, and adjust the drip rate to 1–2 drops per second for a smooth, concentrated brew in 4–6 hours.
Why choose cold drip over cold brew?
Cold drip uses a slow, controlled water flow through a coffee bed, producing a cleaner, more aromatic concentrate than immersion cold brew. The Tiamo HG6329 domestic unit’s bamboo and glass design makes it easy to watch the extraction and adjust the drip rate.
What you need to start
You’ll need a cold drip tower (like the Tiamo HG6329), filtered water, coarse-ground coffee (similar to French press grind), and a clean glass or carafe to collect the brew. The HG6329’s 124 mm diameter and 309.5 mm height fit most countertops.
- Coarse grind prevents clogging and over-extraction.
- Use fresh, filtered water for best flavor.
Step-by-step guide to using a cold drip tower
- 1. Assemble and rinse the parts: Disassemble the cold drip tower and rinse all glass and bamboo components with hot water. Do not use soap on the bamboo parts to avoid absorbing flavors. Check that the drip valve moves freely before starting.
- 2. Add coffee grounds to the brew chamber: Place a paper or metal filter at the bottom of the brew chamber. Add 70–80 grams of coarse-ground coffee and level it gently without tamping. Too fine a grind will slow the drip and cause over-extraction; too coarse will make weak coffee.
- 3. Fill the water chamber with ice and cold water: Fill the top chamber with a 50/50 mix of ice and cold filtered water. This keeps the water cold throughout the brew, which reduces bitterness. Using only ice water without ice cubes will warm up faster and change the extraction.
- 4. Adjust the drip rate: Open the drip valve until water falls at 1–2 drops per second. A faster drip (3+ drops/second) under-extracts; a slower drip (less than 1 drop/second) over-extracts. Wait 1 minute after adjusting to let the rate stabilize before checking again.
- 5. Let it brew and collect the concentrate: The brew takes 4–6 hours depending on grind and drip rate. The concentrate collects in the bottom carafe. Once the water chamber is empty, remove the carafe and stir the brew. Store the concentrate in a sealed glass bottle in the fridge for up to 2 weeks.
Product facts
- HG6329 - Domestic Unit: Tiamo HG6329 domestic cold drip brewer with bamboo and glass details. Dimensions: 309.5 mm high × 124 mm diameter. Its compact size fits most kitchen counters, and the glass chamber lets you see the water level and drip rate clearly.
HG6329 - Domestic Unit
