Score the pork belly or shoulder meat.
In a bowl, combine sugar, garlic, soy sauce, vinegar, pineapple juice, and red food color.
Add salt and black pepper to the mixture and stir well.
Place the meat into the marinade and mix thoroughly to ensure it's well coated.
Allow the meat to marinate for 2 to 3 days.
After marinating, cook the tocino over low to medium heat to prevent the sugar from burning.
