Pat the shrimp dry and toss them with cornstarch until evenly coated.: The moment you pat the shrimp dry you will notice their surface go from glossy to slightly matte, which is essential for the cornstarch to adhere properly. The dry surface sizzles instantly on contact with oil, creating that first audible pop that signals crisping. Use paper towels and press gently, avoiding tearing the flesh. When tossing in cornstarch , aim for a light, even dusting rather than a clumpy paste; excess powder will flake off in the oil and create an uneven crust. A common mistake is starting with damp shrimp , which causes the coating to become gummy. If pieces stick together, separate them and recoat individually to ensure uniform browning and texture.
Heat oil in a frying pan over medium-high heat. Fry the shrimp in batches until golden and crispy, about 2 to 3 minutes per side. Remove and drain on paper towels.: When the oil is ready it should shimmer, not smoke, and you will hear an energetic sizzle as each coated piece meets the surface. Frying in batches prevents the temperature from dropping, which keeps the crust crisp and prevents sogginess. Watch for a warm golden hue around the edges, and flip when the underside has set; the shrimp should feel firm but springy when done. Drain on paper towels to absorb excess oil and preserve the crisp shell. Overcrowding is a frequent error, leading to steamed, pale coating rather than a crunchy finish. Maintain moderate heat, adjusting the flame so the oil does not burn the cornstarch coating before the inside reaches the proper texture.
In the same pan, remove any excess oil except for 1 tablespoon and reduce heat to medium. Add garlic and chili, sautéing until fragrant, about 1 minute.: Keeping a tablespoon of oil preserves flavor and allows the garlic to bloom without smoking. As you add the minced garlic and the thinly sliced chilies they will begin to release aromas almost immediately; you should smell a toasty sweetness from the garlic and a bright, peppery note from the chilies. Keep the heat at medium so the garlic softens and becomes fragrant, but do not let it brown deeply, as that produces bitterness. The chilies will slightly soften, turning translucent at the edges while retaining their crisp bite. A common misstep is overheating at this stage, which ruins the delicate aromatics and makes the pan smell burnt.
Return the shrimp to the pan, sprinkle with salt and pepper, and toss quickly to coat. Adjust seasonings as needed.: As the shrimp returns to the warm pan, the reserved oil and sautéed aromatics will lightly glaze the crust, carrying the flavors into each bite. You will hear a brief renewed sizzle and see the shrimp glisten as they pick up a sheen from the oil and aromatics. Tossing them quickly ensures the seasoning adheres evenly and does not disturb the crisp texture. Taste one and adjust the kosher salt and white pepper if necessary, adding sparingly because the concentrated crust intensifies seasoning. Avoid tossing excessively, which can dislodge the coating and make the surface patchy rather than uniformly golden.
Serve immediately with fresh cilantro sprinkled on top.: The finishing touch of chopped cilantro brings a cool, herbal contrast to the warm, savory shrimp . Serve right away so the crisp coating stays intact; as the pieces sit they will slowly lose crunch and become softer. The aroma of fried garlic and chilies should still linger, and the bright green flecks of cilantro will provide visual freshness. A common oversight is letting the dish rest too long before serving, which diminishes the textural contrast that makes this preparation special. Plate the shrimp on warm dishes to slow cooling and preserve the sensory balance.