Creating the Mexican Shrimp Cocktail with Avocado & Lime is simple when you follow these easy steps:

1. Cook the Shrimp: In a medium pot, bring water to a boil. Add the shrimp and cook until they turn pink and opaque, about 3-4 minutes. Drain and rinse under cold water to prevent further cooking.

2. Prepare the Vegetables: While the shrimp cools, chop the red onions, tomatoes, cucumber, and avocado. Place them in a large mixing bowl.

3. Mix the Base Sauce: In a smaller bowl, combine ketchup, lime juice, and hot sauce. Stir well to create a tangy sauce.

4. Combine Ingredients: Once the shrimp has cooled down, add it to the bowl with vegetables. Pour the sauce over the shrimp and mix gently until everything is well combined.

5. Add Seasoning: Taste the mixture and season with salt and pepper as needed. Adjust lime juice and hot sauce to match your preference.

6. Chill the Cocktail: Cover the bowl with plastic wrap and place it in the fridge for at least 30 minutes. This chilling time allows the flavors to blend beautifully.

7. Garnish: Before serving, gently fold in the chopped cilantro and add the diced avocado. Ensure to keep the avocado chunks intact for a lovely presentation.

8. Serve: Spoon the cocktail into individual serving glasses for an elegant touch.