Step 1

Fill a large bowl with ice and cold water and set next to the sink.

Step 2

Bring a large pot of water to a boil over high heat. Add the shrimp and cook, stirring occasionally, until bright pink and cooked through, about 1½ minutes (the water needn't return to a boil).

Step 3

Drain the shrimp in a colander and then immediately plunge them into the ice water to shock them and stop the cooking process. Let sit until chilled, about 15 minutes. Peel the shrimp and set aside.

Step 4

In a medium bowl, whisk together the mayonnaise, Old Bay, wine vinegar and Worcestershire sauce. Stir in the shrimp, celery, and light green scallions. Taste and adjust seasoning if necessary. Chill in the refrigerator until ready to serve. Before serving, transfer the salad to a serving bowl and sprinkle with the dark green scallions and a dash of Old Bay. The salad will keep for 2 days, covered, in the refrigerator.