One of the most classic's from Italy, Guanciale is the salt dry cured jowl of a quality pig. Using quality pork from a well-fed, older animal jowl of the pig is used, boneless and often triangular in shape (could be 1-3kg / 2-6 lbs). One of the most versatile Italian's classic dry cured meats. It's used in many Italian dishes or can be served as a antipasti/charcuterie board.
Trim to the desired shape. Skin is left on. Carefully remove glands on meat.
Hang in a Suitable Environment. Often 50-60°F / 10-50°C. Humdity of 70-80% ideally. Make a hole with a knife for either a S hook or some butcher twine. Hang the meat in a cool, well-ventilated Area, Cellar, Garage, DIY Curing Chamber, Regular Fridge, Dry Curing Chamber
Monitor Progress: Regularly check the meat’s weight and appearance to gauge the curing process’s progression. Vinegar dabbed onto mold can remove it, if excessive growth occurs.
Please note that the craft of making dry-cured meats is beyond a recipe. This is not a cooked product. It takes a reasonable amount of knowledge to create salumi, charcuterie, and salami safely.
My advice is if you have doubts about smell or visual cues, then it's not worth eating.
This is my interpretation of a classic salumi whole muscle dry cured meat project.