While cheesecloth is typically used for, of course, cheese - particularly straining milk - it serves quite a few functions. It can keep your guanciale fresh.
Pork two yolks
Guanciale - Italian cured pork jowl
Homemade bacon – how to cure and dry your own bacon? - BBQ Bastard
Homemade Guanciale – So Good! – The Roaming GastroGnome
Guanciale (and Bacon) Cured the Ole' Fashioned Way – The Modern
OurCookQuest — OurCookQuest
Guanciale (and Bacon) Cured the Ole' Fashioned Way – The Modern
Cook - Tasting Table
Cook - Tasting Table
Homemade Pancetta Recipe