⅓ cup Spanish onion, chopped
¼ cup freshly squeezed lime juice
1 pound chilled cooked medium shrimp - peeled, deveined, and tails removed
2 roma (plum) tomatoes, chopped
1 cucumber, finely chopped
1 stalk celery, finely chopped
1 jalapeno pepper, seeded and finely chopped
2 teaspoons salt
2 teaspoons ground black pepper
1 ½ cups chilled tomato and clam juice cocktail (such as Clamato®)
1 cup chilled ketchup (such as Heinz®)
1 bunch fresh cilantro - stems discarded and leaves chopped
2 tablespoons hot pepper sauce (such as Valentina®)
2 avocados - peeled, pitted, and chopped
Meanwhile, toss shrimp, roma tomatoes, cucumber, celery, jalapeno, salt, and black pepper in a medium bowl until thoroughly combined.
Whisk tomato and clam juice cocktail, ketchup, cilantro, and hot pepper sauce in a separate bowl; stir dressing into shrimp mixture.