Ingredients

1 teaspoon Old Bay seasoning 

1 dried bay leaf 

1 tablespoon plus 1 teaspoon coarse salt 

1 pound small shrimp, peeled and deveined (leave tails intact, if desired) 

1 cup extra-virgin olive oil 

1/3 cup fresh lemon juice 

1/3 cup cider vinegar 

1/4 cup chopped fresh flatleaf parsley 

1/2 teaspoon red-pepper flakes 

2 cloves garlic, minced 

1/2 yellow onion, thinly sliced 

1 teaspoon mustard seeds 

1/4 teaspoon whole cloves 

1/4 teaspoon juniper berries 

1/2 teaspoon celery seeds 

Preparation

In a medium pot, bring 2 quarts water, Old Bay, bay leaf, and 1 tablespoon salt to a boil. Reduce heat; simmer 10 minutes. Add shrimp and cook until just pink and opaque, 30 seconds; drain.

Stir together shrimp and remaining ingredients in a bowl. Transfer mixture to a container. Cover tightly; shake to distribute. Chill at least 5 hours and up to 2 days before serving.