1. Serves 24 • Bring stock to a simmer. Slice onions into thin rings. Add onions, soy sauce, lime or lemon juice, ginger, and peppers to broth. Simmer for five minutes, or until onions are crisp-tender.
2. To serve, place 4 shrimp halves into each serving bowl. Ladle in soup and sprinkle with cilantro sprigs and lime slices for garnish.