*available at Hispanic markets, some specialty foods shops, and some supermarkets To make the kebabs: Let the skewers soak in water to cover for 1 hour. Toast the chili on a baking sheet in the middle of a preheated 250F. oven for 5 minutes and transfer to a heatproof bowl. Pour enough boiling water over the chili to cover, let the mixture stand for 30 minutes, and drain the chili. In a blender blend together the chili, the 1 cup water, the garlic, the onion, the cumin, the thyme, the oregano, the salt, the peppercorns, the oil, and the lemon juice until the marinade is smooth. In a large heavy-duty resealable plastic bag combine the pork and the marinade and let the pork marinate, chilled, for at least 6 hours overnight. Drain the pork, pat it dry lightly, and thread each skewer loosely with 3 pieces of the pork, 3 chunks of the pineapple, and 3 chunks of the red onion. Grill or broil the kebabs on an oiled rack set about 4 to 5 inches from the heat for 8 to 10 minutes on each side, or until the pork is cooked through but still slightly pink. Serve the kebabs with the manchamantel sauce. To make the sauce: Toast the chilies on a baking sheet in the middle of a preheated 250F. oven for 5 minutes and transfer them to a heatproof bowl. Pour enough boiling water over the chilies to cover, let the mixture stand for 30 minutes, and drain the chilies. In a heavy skillet cook the garlic, the onion, and salt and pepper to taste in 2 tablespoons of the oil over moderately low heat, stirring, until the onion is soft and pale golden, add 1 tablespoon of the sugar and 1 1/2 tablespoons of the vinegar, and cook the mixture, stirring, for 1 minute. Transfer the onion mixture to a blender, add the chilies, the broth, the 1/2 cup water, the pineapple, the banana, the cinnamon, the cloves, the additional sugar and vinegar if desired, and salt and pepper to taste, and blend the sauce until it is continued in part 2