Ingredients

1. 1/3 cup mirin
2. 2 tablespoons soy sauce
3. 2 tablespoons Asian sesame oil
4. 1 tablespoon sesame seeds, lightly toasted and finely ground
5. 2 tablespoons minced garlic (about 4 cloves)
6. 2 scallions, white and light green parts only, chopped
7. 2 tablespoons minced fresh ginger
8. 1 tablespoon Asian chili-garlic paste
9. 1/4 teaspoon freshly ground black pepper
10. 1/8 teaspoon crushed red pepper
11. 2 pounds boneless center-cut pork loin, sliced 1/2 inch thick and pounded 1/3 inch thick
12. Vegetable oil, for the grill
13. 1 large head of red-leaf or green-leaf lettuce, leaves separated
14. Miso, red pepper paste, chili-garlic paste and sliced hot green chiles plus thinly sliced scallions or kimchi, for serving

Directions

1. 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. 
2. 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.

Serve With

Steamed white rice or white sticky rice.