In a large pot, bring 4 cups of water to a boil. Squeeze the juice of the lemon halves into the water and add the lemon halves and the Old Bay seasoning.

Cook the Shrimp

Once the water is boiling, add the shrimp. Cook for 2-3 minutes or until the shrimp turn pink and opaque. Be careful not to overcook them.

Chill the Shrimp

Remove the shrimp from the pot and place them in a bowl of ice water to stop the cooking process. Let them chill for about 5-10 minutes, then drain and pat dry.

Napa Slaw Preparation

Mix the Ingredients

In a large mixing bowl, combine the shredded Napa cabbage, shredded carrot, and chopped green onions.

Prepare the Dressing

In a separate small bowl, whisk together the rice vinegar, olive oil, sugar, salt, and black pepper until well combined.

Toss the Slaw

Pour the dressing over the cabbage mixture and toss until everything is evenly coated. Set aside to let the flavors meld.

Cocktail Sauce Preparation

Combine Sauce Ingredients

In a small bowl, mix together the ketchup, horseradish, lemon juice, and Worcestershire sauce until well blended.

Assembly

Plate the Dish

On a serving platter, arrange the chilled shrimp. Serve alongside the Napa slaw, a small bowl of cocktail sauce, and garnish with pimento stuffed olives and lemon wedges.