Afterwards, I examined both Nano's original water tank and the barista kit water tank, and found that once the original water tank is twisted all the way in you cannot pull it off the main body without intentionally twisting it back off - BUT with the barista kit water tank, even if I twist it as far as it would go onto the main unit, half the time it actually doesn't sit level and can be pulled off fairly easily (so steam pressure from the hot water inside can push it open

Luckily people around me only got splashed with warm water, so it did not hurt them

As long as you can get hot water

This time boiling hot water poured all over my fingers resulting in a whole lot of pain and bad blisters

To use, simply add ground coffee to the included portafilter cup, or use a K-Cup with the optional accessory, then fill the cup with hot water

you still decide to give this a try, I'd seriously suggest that you test out the seal before adding hot water - and definitely be very careful when you do add hot water, so you don't end up burning yourself like I did!

You can also pack a few shots to take with you with this kit and then all you need is hot water

I do think you need to be mindful of the negative reviews and be extra careful with the hot water to avoid accidents.

All you need is a bit of hot water and you can start making espresso!I bought the barista kit also, it's a great addition because it's super

After I had filled the large water tank (no it wasn't overfilled - in fact the water wasn't even up to the max fill line), twisted to seal (as I had done many times with the original water tank with no issues), and inverted the whole unit to get ready to pump my espresso - the water tank popped right off, and spilled near-boiling water all over my left hand!

Afterwards, I examined both Nano's original water tank and the barista kit water tank, and found that once the original water tank is twisted all the way in you cannot pull it off the main body without intentionally twisting it back off - BUT with the barista kit water tank, even if I twist it as far as it would go onto the main unit, half the time it actually doesn't sit level and can be pulled off fairly easily (so steam pressure from the hot water inside can push it open

The only down side is you have to have hot water available, but this isn't too much of a hassle

Luckily I was next to the sink, and was able to run cold water on my burnt hand immediately to alleviate some of the damage.

Just need access to hot water and quality grounds.