To make the caramel sauce, heat ⅔ cup (100g) granulated sugar in a small saucepan over medium heat, about 5-8 minutes, until it turns a brown color and thins out. You can swirl the pan or stir occasionally so that the sugar gets caramelized easily.
Carefully add 1 cup (120ml) hot water while stirring, then continue stirring until fully dissolved. The sugar will seize up at first, but if you continue to stir, it will dissolve into the water. Set aside to cool.
In a small bowl, combine ¼ cup fish sauce, ¼ cup caramel sauce, 3 tbsp minced shallots, 1 tbsp minced garlic, 2 tbsp granulated sugar and ½ tsp ground black pepper. Stir to combine.
Slice the 1 lb (500g) pork belly thinly and place it in a bowl, then mix with half of the sauce you just made. Cover and set aside.
In a separate bowl, combine the 1 lb (500g) ground pork with the remaining marinade ingredients. Cover, and let both marinate for 30 minutes or longer in the refrigerator.
Toss the sliced 1 piece green papaya or kohlrabi (about 150-200g) and 1 cup matchstick carrots1 cup matchstick carrots with 2 tsp salt and let sit for 15–30 minutes to draw out moisture. Drain the released water, then rinse the vegetables and slightly squeeze to remove any excess liquid.
Mix the vegetables with the 1 tbsp sugar and 1 tbsp rice vinegar. Let the pickles sit for at least 15 minutes, or up to an hour, to absorb flavor.
Once the ground pork has marinated, remove it from the fridge and form it into small patties (about 16 or so). Then grill the marinated pork slices and patties over charcoal until both sides are evenly golden brown. If charcoal is not available, heat 1-2 tsp of oil in a skillet and then place the meat, one kind at a time. Cook, flipping occasionally until it is cooked through on both sides and the meatballs reach an internal temperature of 160F.
Cook the 7 oz rice vermicelli noodles according to package instructions by boiling or soaking in hot water until softened. Drain well, then rinse to remove excess starch and prevent sticking.
To make the dipping sauce, combine ½ cup granulated sugar, 2 cups water, ½ cup fish sauce, and ½ cup rice vinegar in a saucepan and gently heat while stirring until the sugar is fully dissolved.
Place the grilled pork and patties into a serving bowl, pour over the dipping sauce, and add pickles along with extra garlic and bird’s eye chili (optional) if desired.
Serve with vermicelli noodles and fresh herbs and greens: lettuce, thai basil, perilla, cilantro, etc. on the side, and eat by dipping and combining everything together.