Creating Salt and Pepper Crispy Shrimp is straightforward if you follow these simple steps:

1. Prepare the Shrimp: Rinse the shrimp under cold water and pat them dry with paper towels. This step is crucial for achieving a crispy texture.
2. Mix Dry Ingredients: In a mixing bowl, combine cornstarch, all-purpose flour, baking powder, salt, black pepper, garlic powder, onion powder, and cayenne pepper if using. Whisk together until well-blended.
3. Coat the Shrimp: Add the shrimp to the bowl with the dry mixture. Toss until the shrimp are evenly coated with the batter.
4. Heat the Oil: In a deep skillet or frying pan, heat about 1 inch of vegetable oil over medium-high heat. To check if the oil is ready, drop a small amount of batter into the oil; it should sizzle upon contact.
5. Fry the Shrimp: Carefully add the coated shrimp to the hot oil in batches. Avoid overcrowding the pan. Fry for about 2-3 minutes on each side or until golden brown and crispy.
6. Drain Excess Oil: Use a slotted spoon to remove the shrimp from the oil and place them on a plate lined with paper towels to absorb any excess oil.
7. Garnish: Once all the shrimp are cooked, sprinkle with additional salt and pepper if desired. Garnish with fresh cilantro or sliced green onions for a pop of color.
8. Serve Immediately: For the best texture, serve the shrimp hot out of the fryer.