Soak noodles in warm water for at least 10 milnutes. Drain and cut them into inch long pieces. In mortar & pestle, pound together the garlic, cilantro root, peppercorns and salt. In wok, heat oil and fry the spice misture until fragrant. Add shrimp, pork and fry for 3 minutes. Add noodles, fish sauce, and sugar. Place mixture in bowl, allow to cool. Mix in bean sprouts, coriander and shallots. Place 1 Tablespoon of mixture in the center of a wrapper. Roll up the bottom edge of the wrapper, then fold over the left and right sides. Roll the wrapper up until it has almost reached the top edge. Seal the roll with a paste made from the flour and water. Set aside for 1 hour to allow paste to dry. Heat oil in wok and fry 4-5 at a time for 5 minutes. Serve immediately.