Heat the oil in a pan.
Saute the garlic, ginger, and onion until the onion becomes soft.
Add the pork strips. Cook for 3 minutes.
Put-in the liver. Cook for 3 minutes.
Add the soy sauce, lechon sauce, and water. Stir and let boil. Cover and simmer for 30 minutes. Note: add water as necessary.
Pour-in the vinegar. Allow to reboil.
Add the sugar, salt, and pepper. Stir and cook for 3 to 5 minutes uncovered.
Transfer to a serving bowl.
Serve. Share and enjoy!