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The moka pot is a stovetop brewer that produces coffee as concentrated as espresso but with its own distinct character - bold, rich, and deeply satisfying without a single milligram of pressure profiling required.

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What is a moka pot?

A moka pot (also called a stovetop espresso maker) brews coffee by using steam pressure to push near-boiling water up through a basket of ground coffee. It operates at 1-2 bars of pressure - far lower than an espresso machine’s 9 bars - so the resulting brew is strong and concentrated but technically different from espresso. The texture is fuller-bodied than drip coffee and the flavour is intense, making it a popular choice for Americanos and milk-based drinks made at home without a machine. Decaf works very well in a moka pot. The concentrated format compensates for any subtle body reduction from the Swiss Water® Process, and the stovetop method is forgiving enough that minor grind adjustments have a big impact on the final cup.

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What grind size should I use?

Use a moka fine-medium grind - noticeably coarser than espresso grind but finer than drip. Think coarse sand rather than powdered sugar. Using espresso-fine grounds in a moka pot is the most common mistake. Fine grounds restrict flow, build excess pressure, and produce a bitter, harsh extraction. They also put strain on the safety valve. Dial just coarse enough that hot water flows steadily upward rather than spurting or stalling. Swiss Water® decaf beans extract slightly faster than caffeinated beans due to lower density, so you may find that erring toward the coarser end of the moka range gives you a cleaner, sweeter cup.

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How do I fill and prepare the moka pot?

  • Water: Fill the bottom chamber to just below the safety valve. Do not cover the valve - this is a pressure release point, not a fill indicator. Using pre-heated water (from a kettle) is strongly recommended. Starting with cold water means the grounds sit in a warming chamber for much longer, which scorches them and produces a metallic, bitter taste.
  • Basket: Fill the basket level with ground coffee. Do not tamp. The moka pot is not designed to handle compressed grounds - tamping increases resistance, spikes pressure, and risks forcing water around the gasket rather than through the coffee.
  • Assembly: Screw the top and bottom chambers together firmly before placing on heat. A loose seal causes steam to escape from the sides rather than through the coffee.

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What heat setting should I use?

Use medium-low heat. The moka pot should take 4-6 minutes from cold water, or 2-4 minutes from pre-heated water. Watch and listen. When you hear a gurgling or sputtering sound, the bottom chamber is nearly empty and the remaining water is superheated. This last burst over-extracts and contributes bitterness. Remove the moka pot from heat just as the gurgle starts - before the chamber fully empties. Run the base under cold water to stop extraction immediately if needed. Decaf responds well to slightly lower heat and slower extractions. If your shots taste bitter or ashy, reduce the flame and extend the brew time.

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Aluminium vs stainless moka pots

Both materials work with decaf. Aluminium moka pots are the classic choice (Bialetti’s original design) and brew excellent coffee, but they can impart a faint metallic note - especially when new or if acidic water sits in them. A well-seasoned aluminium pot is usually neutral. Stainless steel pots are inherently neutral and easier to clean. Either works with Colipse decaf.

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What about diterpenes?

Moka pots use a metal filter, not a paper filter. This means diterpenes - specifically cafestol and kahweol, oily compounds found in coffee - pass into the cup. Diterpenes are associated with small increases in LDL cholesterol in people who drink several cups of unfiltered coffee daily. If you are monitoring cholesterol, this is worth knowing. See Diterpenes and Coffee for more detail. Paper-filtered methods (drip, AeroPress with paper) remove most diterpenes. The moka pot does not.

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What about caffeine?

Swiss Water® Process removes 99.9% of caffeine without solvents. A standard moka pot serving of Colipse decaf contains approximately 2-15mg of caffeine - a fraction of the 60-120mg in a regular moka pot brew. The process is solvent-free and the flavour profile is preserved. Most people who brew moka pot in the evening specifically for its bold flavour find Swiss Water® decaf a direct substitute.

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Which Colipse Decaf Coffee product works best with a moka pot?

Dark Roast Decaf is the go-to recommendation for moka pot. The darker roast profile pairs naturally with the bold, slightly roasty character the method produces - chocolatey, full-bodied, and low in brightness. Decaf Espresso Beans also work well if you prefer a slightly more complex, less one-dimensionally dark cup. Both are available as whole bean or pre-ground at moka fine-medium.