1. Prepare the Ingredients: Begin by preparing all the ingredients. Peel and devein the shrimp if necessary. Cut the asparagus into 2-inch pieces and slice the mushrooms.

2. Marinate the Shrimp: In a bowl, combine the shrimp with 1 tablespoon of soy sauce and a pinch of salt. Let the shrimp marinate for about 10 minutes to allow the flavors to infuse.

3. Heat the Pan: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering.

4. Cook the Aromatics: Add the minced garlic and grated ginger to the pan and stir-fry for about 30 seconds, until fragrant.

5. Cook the Shrimp: Add the marinated shrimp to the pan and cook for 2-3 minutes, stirring occasionally, until the shrimp begin to turn pink.

6. Add the Vegetables: Toss in the asparagus pieces and sliced mushrooms, and continue cooking for another 3-5 minutes, or until the asparagus is tender-crisp.

7. Finish with the Sauces: Pour in the remaining 2 tablespoon of soy sauce and the oyster sauce (if using). Stir everything together to ensure the ingredients are evenly coated.

8. Season and Serve: Taste the shrimp and asparagus stir-fry and adjust the seasoning with salt and pepper as needed. Drizzle the sesame oil over the top for a final touch of richness. Serve immediately, either on its own or over a bed of fluffy rice or noodles.