In a mortar and pestle, crush the garlic cloves with salt until you form a paste. If using a food processor, blend the garlic and salt until smooth.
Transfer the garlic paste to the large mixing bowl and combine with ground black pepper, chopped hot peppers, white vinegar, and water. Stir well to ensure everything is well mixed.
Place the pork chunks in the glass or ceramic container and pour the marinade over them. Ensure that the pork is submerged in the marinade. Seal the container with its lid.
Allow the pork to marinate for a minimum of 12 hours, preferably overnight, in the refrigerator. Stir or shake occasionally to ensure all pieces are marinated evenly.
Once marinated, remove the pork from the refrigerator and allow it to come to room temperature.
In a large frying pan or skillet, heat the vegetable oil or lard over medium heat.
Using a slotted spoon, remove the pork chunks from the marinade and gently place them into the hot oil. (Be careful as the oil may splatter due to the vinegar from the marinade.)
Fry the pork pieces until they are golden brown on all sides and cooked through, roughly 5-7 minutes per side.
Once done, transfer the fried pork pieces onto a plate lined with paper towels to drain any excess oil.
Serve hot, garnished with freshly chopped parsley or cilantro if desired.