I've been experimenting again...
We have a big aquarium at home with a few exotic marine fish. My hubby is rapidly becoming an enthusiastic water chemist to keep the critters happy in their tank. Consequently, he has got himself an RO unit - in laymans' terms this is a machine which filters water by Reverse Osmosis, takes out 99.9% of impurities in water, no nitrates, phosphates, copper, chlorine, calcium etc. The result is about as pure as you can get - certainly more so than if you used household water filters or even distilled water.
So I thought, I bet this tastes good. So I tried using that water in my espresso machine (I've got a little one-handle Krups machine at home). It REALLY makes a difference, makes the coffee noticeably smoother. We are lucky, the tap water round us isn't normally too bad at all, (a lot better than where we used to live in the South East for example) but I never realised quite how much of an effect filtering water can have!
Does anyone else bother filtering water for espresso? How do you do it? Is it worth it (I mean, in coffee shops? I imagine it would cost quite a bit to set up!)
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