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Alfonso Bialetti designed the Moka Express in 1933, an octagonal aluminium pot. The little moustached man on the side came later, in the 1950s. The pot has been on Italian stoves ever since. Ask an Italian how they make coffee at home and the answer, more often than not, is the moka.
It’s also the most misnamed coffee maker in the world. People call it a stovetop espresso maker. It isn’t one.
Why a Moka Pot Isn’t Espresso
Water boils in the bottom chamber. Steam builds pressure and pushes the hot water up through a basket of ground coffee and into the top. That pressure is around 1 to 1.5 bar. An espresso machine pushes water through the coffee at about 9 bar.
The difference shows in the cup. Moka coffee is strong and thick, much stronger than drip, usually brewed at around 1:7 to 1:10 coffee to water. It doesn’t have espresso’s syrupy body or its crema. Call it what Italians often do: caffè. It’s its own drink, and a very good one.
What the Sizes Actually Mean
Bialetti counts in “cups,” and the cup is a small Italian espresso cup, around 40 to 50 ml. So a 6-cup pot does not fill six mugs. Rough yields:
- 1 cup: about 60 ml
- 3 cup: about 130 ml
- 6 cup: about 270 ml
- 9 cup: about 420 ml
- 12 cup: about 670 ml
For one person, the 3-cup Moka Express is right. For two, get the 6-cup. Moka pots work best filled to the line, so don’t buy big and brew half.
How to Brew It Without Bitterness
- Grind medium-fine, a bit coarser than espresso. Pre-ground “moka” coffee is fine too.
- Fill the base with just-boiled water up to just under the safety valve. Hot water shortens the time the coffee sits on the stove.
- Fill the basket and level it with a finger. Don’t tamp. Pressing the coffee down blocks the flow.
- Use medium-low heat with the lid open. Coffee should start flowing in a minute or two.
- When the stream turns pale and starts to gurgle, take it off the heat and run the base under cold water.
As a guide, a 3-cup pot takes about 17 g of coffee and gives about 150 g out. If it’s bitter, the heat was too high or it ran too long. If it’s sour and weak, grind finer or start with hotter water. A medium roast is a good place to start; our roast guide explains why very dark beans turn harsh in a moka.
Aluminium or Stainless Steel
The classic aluminium pot doesn’t work on induction hobs without an adapter plate. If you cook on induction, look at the Bialetti Venus in 18/10 stainless steel, or the Moka Induction with a steel base. Bialetti’s Brikka adds a weighted valve that builds a little more pressure and a foamy top that looks like crema.
Wash aluminium pots with water only. The oily layer that builds up is part of the flavour, and dishwasher detergent dulls the metal.
The Company Behind the Pot
Bialetti itself has changed hands. In 2025 Nuo Capital, an investment firm led by Hong Kong businessman Stephen Cheng, bought control of Bialetti Industrie, and the company was taken off the Milan stock exchange. The Omegna factory closed years earlier, around 2010, and Italian press reports say the pots are now largely made in Romania and Turkey. The design hasn’t changed.
Moka and Milk
Moka coffee cut with an equal splash of warm milk makes a very good stand-in for a cortado when there’s no machine in the house. It won’t match what you’d get at an Italian bar counter, but it’s close in spirit. For the real thing at home, see how to make a cortado at home, or our guide to manual espresso makers if you want true espresso pressure without a machine.
Ninety years on, it’s still on the stove.