First, let's cook the pork belly. In a pot, bring the pork belly cuts to a boil over medium-high heat. Cover with a lid and let them cook until they become fork-tender.

Now, reduce the heat to low and add the vinegar. Let it simmer for about 5 minutes. Once done, set it aside.

Time to sauté the garlic and onion! In a wide skillet, heat the oil over medium heat, and sauté the garlic and onion until they become wonderfully aromatic. Add the tomatoes and cook them until they turn soft and easy to mash.

Next, stir in the shrimp paste and cook everything together for 5 more minutes.

It's time to bring back the pork along with the remaining liquids. Let it all simmer for another 10 minutes to let the flavors blend beautifully.

Finally, remove the dish from the heat, and it's ready to be served!