Pat the shrimp dry. Moisture is the enemy of a good sear. Lay shrimp on paper towels and pat them dry.
Season lightly with salt and pepper.
Mix the sauce. In a bowl, whisk soy sauce, rice vinegar, honey, ginger, garlic, sriracha (if using), cornstarch, and water. Set aside. The cornstarch will help the sauce thicken and coat the shrimp.
Prep your veggies. Cut broccoli into bite-size florets and slice the bell pepper.
Keep green onions and sesame seeds ready for finishing.
Cook the vegetables. Heat a large skillet or wok over medium-high. Add 1 tablespoon sesame oil. Stir-fry broccoli and bell pepper with a pinch of salt for 3–4 minutes until crisp-tender.
Transfer to a plate.
Sear the shrimp. Add the remaining 1 tablespoon sesame oil to the hot pan. Add shrimp in a single layer. Cook 1–2 minutes per side until just opaque and pink.
Avoid overcooking.
Add the sauce. Reduce heat to medium. Pour in the sauce and toss with shrimp. It will thicken in 30–60 seconds.
If too thick, splash in a tablespoon of water.
Combine and finish. Return veggies to the pan. Toss to coat. Sprinkle in sesame seeds and half the green onions.
Taste and adjust. Add a touch more soy for salt, honey for sweetness, or vinegar for brightness.
Balance is key.
Serve. Spoon over rice, quinoa, or cauliflower rice. Top with remaining green onions, extra sesame seeds, and a squeeze of lime. Add cilantro if you like.