How to make more than one good cup of coffee with a moka pot?
I have a moka pot
I'm really happy with the coffee from this. However, after I've poured the first cup out, if I leave the heat on (however low), the coffee gets a metallic taste to it. If I turn the heat off then it goes cold.
So, my questions are: is this kind of coffee maker only good for the first cup? If not, how can I avoid either outcome? Also, can anyone tell me why it gets this metallic taste to it?
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The coffee simply picks up the aluminum from the pot, as the coffee is acidic. Pour it out. Most importantly - Do not leave the coffee on the heat after the brew is done! There is no water left in the bottom chamber to insulate (and cool) the pot! You could have a disaster on your hands!! At least, you will damage the sealing gasket as it is not made to handle these high temps.
America's Test Kitchen recently tested Moka Pots. In the video, they specifically say to pour all of the coffee immediately when it's done brewing. They don't mention a metallic taste, but they do say that not leaving the coffee in the pot is important for flavor, and that it was equally true for all of the models they tested. So for your purposes, I would recommend that you use a good small thermos or travel coffee mug, and pour your second cup into that immediately upon brewing.
For what it's worth (since I was looking at ATK equipment reviews anyway), this one won their top recommendation for travel mugs:
I have bought glass moka pots from Home Sense. It's great: I can leave my second cup in it and taste is the same as the first one.
Theres usually two reasons for this, so it could be either.
The pot - Try rinsing out the pot with spirit vinegar followed by water and bicarbonate. You might want to use a toothbrush to get into all the corners and give it a good scrubbing.
Your water - If you live in a hard water area, this can cause what you're experiencing, or even new water pipes can also cause the problem. Try brewing a pot with bottled water to see if that's any better.
You should also note that coffee can burn from the residual heat in the pot, and you should keep an eye on your temperatures.
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