I was considering an expensive espresso machine a while back.. but I decided to go with a 3-cup Bialetti Moka Pot. I've been using it daily for a few months and I'm very pleased.
When I first got it, I would rinse it, shake out the water, and set it in the dish drainer. One day I had white aluminum oxide in the bottom water chamber. I got it out by boiling a solution of water and baking soda in it, but I've been careful to wipe the inside chamber dry with a paper towel ever since.
My question is this: is the aluminum oxide dangerous to me or is it detrimental to the taste of the coffee? If not... can I just let the inside oxidize and not worry about wasting the paper towel every time I use the pot?
On an unrelated note, I know Illy makes a Moka grind specifically for the Bialetti pots. How fine is the grind?