Cut the pork belly into bite-sized pieces. Slice the green chili peppers diagonally and mince the bird's eye chili if using.
Heat the cooking oil in a large pan or wok over medium heat. Add the minced garlic and ginger, and sauté until fragrant. Add the minced onions and cook until they become translucent.
Add the pork belly to the pan and cook until it starts to brown and the fat renders out, about 5-7 minutes.
Stir in the shrimp paste and cook for another 2-3 minutes, ensuring the pork is well-coated.
Pour in the coconut milk, stir to combine, and bring to a simmer. Let it cook for about 15-20 minutes, stirring occasionally, until the pork is tender and the sauce starts to thicken.
Add the sliced long green chili peppers and the minced bird's eye chili (if using). Stir and let it simmer for another 5 minutes.
Pour in the coconut cream and stir well.Continue to simmer for an additional 5-10 minutes until the sauce thickens to your desired consistency.
Taste and season with salt and pepper as needed. Serve hot with steamed rice.
Enjoy your homemade Bicol Express! Adjust the amount of chili to your preferred spice level.