Spicy Pickled Shrimp - cooking recipe

Ingredients

2 lbs raw shrimp, unpeeled (26/30 count)
3 small white onions, thinly sliced
1/2 cup olive oil
1/4 cup tarragon vinegar
2 tablespoons pickling spices
2 teaspoons salt
1 teaspoon sugar
1 teaspoon Worcestershire sauce
1/2 teaspoon dry mustard
1/4 teaspoon ground red pepper
1/4 cup chopped fresh parsley

Preparation

Peel shrimp; devein, if desired.
Cook shrimp in boiling water to cover 3 to 5 minutes or just until shrimp turn pink; drain. Rinse with cold water.
Layer shrimp and onions in a large bowl. Wisk together oil and next 7 ingredients; pour over shrimp and onions. Cover and chill 24 hours, stirring occasionally. Stir in parsley just before serving.