Start the rice first (why: brown rice takes the longest). Rinse 1 cup dry brown rice under cold water until the water runs mostly clear to remove excess surface starch — this helps keep the grains separate. Drain, then combine the rice with 2 1/4 cups water and 1/4 tsp kosher salt in a medium saucepan. Bring to a boil over medium-high heat, then reduce to the lowest simmer, cover tightly and cook undisturbed for 40–45 minutes until water is absorbed and rice is tender. Turn off heat and let it rest, covered, for 10 minutes to steam; fluff with a fork before serving.

While the rice cooks, pat the shrimp very dry with paper towels (why: moisture prevents a good sear). Place shrimp in a bowl and toss with 1 tbsp soy sauce, 1/2 tsp sesame oil, 1/4 tsp kosher salt, 1/8 tsp black pepper, and half the minced garlic and ginger. Let sit 8–10 minutes — this quick seasoning adds surface flavor and a little osmotic brining which firms the shrimp so they stay juicy.

Make the sauce slurry: in a small bowl combine the remaining 2 tbsp soy sauce with 1 tsp cornstarch (optional) and 1 tbsp water. Whisk until smooth and set aside. The cornstarch will give you a glossy, clingy sauce; skip it if you prefer a thinner finish.

Heat a large 12-inch skillet or wok over high heat until very hot (why: stir-frying at high heat quickly cooks vegetables and shrimp while preserving crunch and color). Add 1 tbsp neutral oil and swirl to coat.

Add the marinated shrimp in a single layer, leaving space if possible (why: overcrowding causes steaming instead of searing). Cook undisturbed for 60–75 seconds, then flip and cook another 45–60 seconds until just opaque with a slight golden edge — shrimp cook very quickly and will overcook if left longer. Transfer shrimp to a plate and tent loosely with foil to keep warm.

Return the pan to high heat and add another light drizzle of oil if the pan looks dry. Add the mixed vegetables (4 cups) in a single layer and let them sit 20–30 seconds before stirring (why: giving them contact with the hot pan encourages caramelization). Stir-fry for 3–4 minutes until vegetables are bright and crisp-tender; the goal is contrast — tender shrimp and crunchy veg.

Push the vegetables to one side of the pan and add the remaining minced garlic and ginger to the empty space. Cook briefly, about 20–30 seconds, until fragrant (why: fresh garlic and ginger burn quickly — keeping them to the side lets them soften without burning). Then combine with the vegetables.

Return the shrimp to the pan along with the soy-cornstarch slurry (or remaining 2 tbsp soy sauce if skipping cornstarch) and the remaining 1 tsp sesame oil. Toss everything together and cook 30–60 seconds until the sauce thickens and coats the shrimp and vegetables. Taste and adjust with a pinch of salt, pepper, or a splash of soy/tamari as needed. Finish with sliced green onions and an optional sprinkle of sesame seeds or red pepper flakes.

Serve: spoon a generous portion of brown rice into shallow bowls, top with the garlic shrimp stir-fry and a drizzle of toasted sesame oil or a squeeze of lime if using (why: acid brightens the flavors and sesame oil adds a toasty aroma). Serve immediately so shrimp remain tender and vegetables keep their crunch.