Guanciale is Italian for food of the gods. Actually, it is derived from the Italian for cheek. According to François-Xavier from the excellent (and now sadly inactive) FXcuisine it is unavailable outside of Italy. Well our local high-end deli has some and if I can get it here in Prague it is certainly available in many other places outside of Italy. Guanciale is mostly fat, very high quality, strongly flavored fat from the jowl. It is famous as a key ingredient in Carbonara (a weak substitute being bacon) but I'm not a big pasta fan so I found another popular use--to flavor up veggies with fat.