1 bunch scallions, roughly chopped
8 or more garlic cloves, peeled and roughly chopped
1 tablespoon sugar or honey
1/2 teaspoon black pepper
1/2 cup soy sauce
1 tablespoon sesame oil
2 pounds sirloin, rib-eye or skirt steak, thinly sliced, or 3 to 4 pounds beef short ribs, boned and thinly sliced
Boston or loose-leaf lettuce leaves for serving
Gochujang (Korean chili-bean paste) for serving.
Combine the scallions, garlic, sugar, pepper, soy sauce and oil in blender and purée, adding water as needed to form a smooth mixture. Toss the meat with the soy mixture and marinate for 15 minutes to 2 hours. Heat a grill with the rack 4 to 6 inches from the flame; the fire should be as hot as possible.
Remove the meat from the marinade, and grill until browned outside but still rare inside, no more than a couple of minutes per side; do not overcook. Serve the meat wrapped in lettuce leaves, with gochujang for dipping.
Source: Mark Bittman