Creating Bang Bang Shrimp Tacos is a fun and rewarding process. Follow these steps for a delightful meal:

1. Prepare the Bang Bang Sauce: In a bowl, mix together the mayonnaise, sweet chili sauce, sriracha, and lime juice. Set aside.

2. Marinate the Shrimp: Place the shrimp in a bowl and pour the buttermilk over them. Allow to marinate for about 10-15 minutes.

3. Prepare the Coating: In a separate bowl, combine the flour, cornstarch, garlic powder, paprika, cayenne pepper, salt, and pepper.

4. Heat the Oil: In a deep pan, heat about 1-2 inches of vegetable oil over medium-high heat until it reaches 350°F (175°C).

5. Coat the Shrimp: Remove the shrimp from the buttermilk, allowing excess to drip off. Dredge each shrimp in the flour mixture, ensuring they are fully coated.

6. Fry the Shrimp: Carefully place the coated shrimp in the hot oil. Fry in batches to avoid overcrowding until golden brown and crispy, about 2-3 minutes per side.

7. Drain the Shrimp: Use a slotted spoon to transfer the shrimp to a paper towel-lined plate to drain excess oil.

8. Warm the Tortillas: Lightly heat the tortillas in a dry skillet or microwave for about 20 seconds until warm and pliable.

9. Assemble the Tacos: Place a handful of shredded cabbage on each tortilla, followed by a few pieces of fried shrimp.

10. Drizzle with Bang Bang Sauce: Top each taco generously with the prepared bang bang sauce.

11. Garnish: Sprinkle with cilantro if using, and add lime slices on the side for an extra zing.