Make the marinade:
Soak the red chile in very hot water to cover until softened, about 15 minutes. Drain the chile and put it in a blender, along with all the remaining marinade ingredients. Blend until smooth. Set aside 1/2 cup of the marinade for basting. Put the remaining marinade and the pork in a large zip-top bag, seal, and massage the contents to coat. Marinate for 1 to 2 hours in the refrigerator. Remove the pork; discard the marinade.
Make the kebabs:
Thread the meat onto skewers, alternating with the onion, the poblano pieces, and the whole radishes.
Build a medium-hot charcoal fire or heat a gas grill to medium high and oil the grill grate. Grill the kebabs (uncovered for charcoal; covered for gas), turning every 2 to 3 min. Once the pork loses its raw look, baste with the reserved marinade each time you turn the skewers. Grill until the pork is firm to the touch and the edges have begun to brown and the vegetables have begun to color and soften, about 15 min. Mound the skewers on a warm platter; tent with foil to keep warm. Brush the scallions with oil and sprinkle with salt and pepper. Grill until they begin to brown and soften, turning frequently, 3 to 5 min.
Remove the meat and vegetables from their skewers, mound them on the platter and arrange the scallions around the edges.
nutrition information (per serving):
based on six servings;
Photo: Scott Phillips