Place the diced pork belly in a cold skillet over medium heat to slowly render the fat until crispy and golden.
Add the lean ground pork to the same skillet, breaking it up with a spatula until browned and fully cooked.
Stir in the minced garlic and grated ginger, sautéing for about 1 minute until the aromatics are fragrant.
In a small bowl, whisk together the gochujang, tamari, and sesame oil, then pour the mixture over the pork.
Toss the pork continuously in the sauce until it is evenly coated and the glaze becomes sticky and glossy.
Steam or sauté the cauliflower rice in a separate pan with a pinch of sea salt until tender but not mushy.
Divide the cauliflower rice into serving bowls and top with a generous portion of the spicy pork mixture.
Garnish each bowl with sliced cucumber, kimchi, sliced green onions, and sesame seeds before serving.