How to Make It
In a large glass baking dish, combine the mirin, soy sauce, sesame oil, sesame seeds, garlic, scallions, ginger, chili-garlic paste, black pepper and crushed red pepper. Add the slices of pork loin and turn to coat. Cover and refrigerate the pork for 8 to 24 hours.
Light a grill. Lightly brush the grate with vegetable oil. Grill the marinated pork over a medium-hot fire until it is golden brown and just cooked through, about 2 minutes per side. Transfer the grilled pork to 1 end of a platter and arrange the lettuce leaves on the other end. Serve the pork with the suggested condiments.
Steamed white rice or white sticky rice.