A big part of the problem with metal taste or misfunctioning is getter the wrong pot for the job. Moka pots come in different sizes for a reason. You can’t make a smaller or larger cup with the same pot. The water has to be filled to the line under the valve in order for it to work properly. If you want to make moka for 4 people then you have to use a 4 portion pot. If you only want 2 though, you have to switch down to a smaller pot.
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