Remove the black vein from prawn’s back, and cook prawns in 3 cups boiling water with ginger, green onions and wine, over high heat until done. When cool, remove heads and shells, and slice each prawn into 4 slices.
Cut vermicelli into ½ inch wide strips, scald in boiling water for about 5 seconds. Remove and rinse in cold water, drain dry. Mix with sesame oil