You can cut a large piece (or a few weeks' supply of thin slices) of a ham and then:
a) cover the exposed skin with fat and pepper again and put it back in your barn / cellar / bedroom
or
b) put it in your fridge with clingfilm / paper over it (clingfilm if you have a frost free fridge-freezer as in the fridge part of it the moisture is also sucked out, leaving contents to dry out).
The pepper is supposed to keep the bugs off. We still do it, even though presumably the bugs wouldn't get to it anyway because the ham is hanging in a pillow case. Old habits and all that

We use a professional slicer and get those wafer thin slices you'd normally get in the supermarket. The theory was that the ham would last a long time - but we like it so much we eat of it every day

It still lasts for many weeks, though.
As for the 'stick a needle in and sniff it' - it's to tell if the ham is ready, but according to the pro's, us mere mortals can't deduce anything from that (though that might just be their pride / snobbery speaking

). Mould can be green or white as long as it's dry and not fluffy. Cured meat is expected to have mould if you don't put lard on the outside, but I prefer the with-lard method as it's a sure way to keeping the skin moist and preventing the meat from rotting inside (dried-out hard skin doesn't allow the moisture to escape). And yes, 6 months or longer if you can resist - the flavour changes as it ages.
