We run a Kalita Wave 185 on the filter bar every weekend, and it's the brewer we recommend most often when regulars ask about making better coffee at home. It's forgiving, consistent, and doesn't require a lot of expensive equipment to get good results.

What you actually need

A Kalita Wave 185 brewer and the matching wave filters (the flat-bottomed ones. Don't use a different filter shape). A kettle with a gooseneck spout, ideally with temperature control. A grinder. A burr grinder is worth the investment; a blade grinder will work but the results will be less consistent. A scale that measures to 0.1g. And good coffee, ground fresh. That's it.

The basic recipe

We use 15g of coffee to 225ml of water. A 1:15 ratio. Grind medium-fine, roughly the texture of coarse sand. Heat water to 93-94°C. Rinse the filter with hot water first and discard the rinse water. Add the coffee, tare the scale, and start your timer. Pour 45ml of water in the first 30 seconds to bloom the coffee. This releases CO2 and prepares the grounds for even extraction. Then pour the remaining water in slow, steady circles over the next two to two and a half minutes. Total brew time should be around three minutes.

The most common mistakes

Grinding too fine is the most common problem. It slows the flow through the flat bottom and over-extracts the coffee, making it bitter. If your brew is taking more than four minutes, grind coarser. The second most common mistake is pouring too fast and disturbing the bed of grounds. Slow, steady circles. The third is skipping the bloom. It makes a noticeable difference to the evenness of extraction, especially with fresh coffee.

Adjusting for different beans

The recipe above works well for most washed coffees. For a natural or honey-process bean with more sweetness, try dropping the temperature slightly to 91-92°C and extending the bloom time to 45 seconds. This slows the extraction a little and prevents the sweetness from tipping into heaviness. For a very light roast, go up to 95°C and grind slightly finer. These are starting points, not rules. Taste the coffee and adjust from there.

If you want to try the Kalita Wave before buying one, come in on a Saturday morning and order a filter. We're happy to talk through the process while we brew it.