Transfer to shallow dish. Place fish in marinade and refrigerate 2 hours, turning fish occasionally. Preheat broiler, spray broiler pan with vegetable spray. Turn fish and repeat process. Drain the shrimp and soak in cold water to cool.
Place shrimps in a glass or stainless steel bowl.
Whisk together the vinegar, oil, garlic, ginger, and salt and pepper. Pour over shrimps. Stir to coat well, cover, and refrigerate for 1-2 days. Stirring at least twice a day. No more than a few hours before serving, stirring the snow peas and blanch in boiling water for 30 seconds.