Prep the shrimp: Pat the shrimp dry with paper towels. Season lightly with a pinch of salt and pepper. Dry shrimp sear better and stay juicy.
Mix the sauce: In a small bowl, whisk fish sauce, soy sauce, lime juice, brown sugar, and rice vinegar.
Taste and adjust: add more lime for brightness or more sugar for balance. Stir in the cornstarch slurry and set aside.
Heat the pan: Place a large skillet or wok over medium-high heat. Add 1 tablespoon oil and swirl until shimmering.
Sear the shrimp: Add shrimp in a single layer.
Cook 1–2 minutes per side until just pink and slightly curled. Transfer to a plate. Do not overcook.
Sauté aromatics: Add the remaining 1 tablespoon oil.
Toss in garlic, ginger, scallion whites, and sliced chilies. Stir for 30 seconds until fragrant.
Add vegetables: Stir in red onion, bell pepper, and carrot. Cook 2–3 minutes, keeping them crisp-tender.
You want color and snap.
Add mango: Gently fold in mango slices. Cook 30–60 seconds so they warm but don’t break down.
Sauce it up: Give the sauce a quick stir, then pour it into the pan. Toss everything gently.
The sauce should thicken and glaze the shrimp and vegetables in about 1 minute.
Finish and garnish: Return shrimp to the pan with any juices. Toss to coat. Remove from heat.
Sprinkle with scallion greens and cilantro. Taste and adjust seasoning with extra lime or a splash of soy if needed.
Serve: Spoon over steamed jasmine rice or twirl through rice noodles. Add lime wedges and crushed peanuts for crunch.