Guanciale- unsmoked Italian bacon prepared with pig's jowl or cheeks, from Knights Salumi (http://knightsalumi.foodzie.com/)
Can be used just like bacon, but so much better. Great fennel seeds, herbs and spices give this stuff so much more flavor than generic grocery store bacon.
Personally I like to cut it into small cubes and brown or crisp it in a pan. Then sprinkle it into salads, onto pasta, or just snack on it like crispy little meat potato chips.
Purchase at the Little Italy Mercato in San Diego (http://littleitalysd.com/mercato/home.asp). One of San Diego's best famrers markets. Full of great local products.