Moccamaster KBG Select Ocean

1. How Coarsely Should I Grind my Coffee?

We recommend using a medium-coarse grind, with a texture similar to coarse sand or sea salt. If you’re purchasing pre-ground coffee, share these descriptors to ensure you get the right coarseness. Keep in mind that most bagged, pre-ground coffee is typically too fine, which can affect both flavor quality and the brewer’s performance.

2. Is There a Difference Between Filters

Moccamaster Oxygen-Whitened Filters are the best choice for brewing clean, crisp coffee. Unlike brown unbleached filters, which can leave a subtle “cardboard” taste, or permanent wire-mesh filters, which often clog with coffee oils, our paper filters ensure a smooth, balanced brew. A clogged filter can cause the basket to overflow or steep the coffee for too long, leading to over-extracted, bitter flavors—something you’ll never have to worry about with Moccamaster filters.

3. What Kind of Water Should I Use?

If the water tastes good to drink, it will make great coffee. We recommend using fresh tap, filtered, or bottled water for the best results.

Avoid using reverse osmosis (RO) or distilled water, as these can damage the brewer’s copper boiling element. Because all minerals are removed in RO and distilled water, the water becomes slightly acidic. In an effort to return to neutral pH, it leaches minerals from the copper element—eventually causing permanent damage.

Since we build Moccamaster brewers to last for decades, using RO or distilled water could significantly shorten your brewer’s lifespan.

4. What is Descaling, and How Often Should I Do it?

Over time, minerals from water accumulate inside the Moccamaster’s boiling element, forming scale. This buildup can slow and eventually stop the flow of water. It also can affect the brewing temperature and saturation time.

If not descaled regularly, the brewer can become permanently damaged. Descaling products break down the mineral buildup inside your brewer, ensuring consistent brewer functionality and great coffee.

Descaling your brewer every 100 cycles, or a minimum of every three months. An excellent way to remember is by descaling after you finish a box of 100-count filters.