Add the aromatics: Heat the vegetable oil in a frying pan or skillet over medium-high heat. Add the minced garlic, ginger and finely sliced scallion. Stir-fry for about 1 minute, until fragrant.Stir in the gochujang and cook for about 30 seconds.
Cook the pork: Add the ground pork and stir-fry for 5–7 minutes, breaking it up with a spatula, until browned and cooked through.
Season the pork: Add the apple vinegar, soy sauce, gochugaru (korean red pepper flakes), sugar and sesame oil. Stir well to combine and cook for another 2–3 minutes, allowing the flavours to develop. Remove from the heat and set aside.
Prepare the tofu sauce: Add the silken tofu to a blender, food processor or use a hand blender to blend until completely smooth and creamy.
Cook the udon: Prepare the fresh udon noodles according to the packet instructions. Drain well once cooked.
Assemble the bowls: Pour the udon noodles into a large bowl. Spoon the spicy gochujang pork onto one side of each bowl, then pour the creamy silken tofu sauce onto the other side.
Garnish and serve: Top with sliced scallions and roasted sesame seeds. Mix the pork and creamy tofu sauce through the udon before eating and serve immediately.