Rinse the pork belly well a few times. Rub with salt, massaging thoroughly.
In a pot over medium heat, place pork, bay leaf, and enough water to cover everything. Boil for 1-2 hours. Remove pork belly.
In another pot, combine water and oil and heat over medium-low heat. Place pork belly into the oil and cook for 3 hours. Remove pork to drain.
Drain pork belly thoroughly of excess water and slice thinly. Air dry for a few hours.
In a pan over medium-high heat, fry the bagnet slices for about a minute until crispy.