Combine the shrimp, salt and pepper.: You will notice the salt drawing a hint of moisture from the shrimp , and the faint aroma of white pepper will lift the surface scent. This brief seasoning stage boosts the umami and balances the natural sweetness of the shrimp . Make sure the shrimp are evenly coated, and avoid over salting if your chicken broth is salty. A common mistake is letting seasoned shrimp sit too long which can change texture, so proceed to the pan within a few minutes.
In a medium preheated pan or wok, add 2 teaspoons of oil. Add scallion, ginger and garlic. Stir-fry until garlic is lightly browned. Add chicken broth, one tablespoon at a time to prevent burning.: As the oil heats it should shimmer, and when you add the smashed white scallion , smashed ginger , and minced garlic , aromas will bloom immediately, filling the kitchen with sharp, savory notes. The sound should be a soft sizzle rather than a roar. Browning the garlic just until it is golden creates a nutty aroma, but if it goes too dark it turns bitter, so keep it moving. Adding the chicken broth by tablespoon helps deglaze and regulate temperature, preventing the aromatics from burning while building sauce depth.
Turn up heat to high and add shrimp. Stir-fry until cooked, and add tablespoons of broth as needed to prevent from burning. Remove shrimp. You can also remove the spices, but I kept mine in the pan.: Cranking to high heat should make the pan roar to life, and when the shrimp meet the surface you should hear a confident sizzle. That quick sear creates a slightly caramelized edge while keeping the center tender. The shrimp will change from translucent to opaque and curl a bit, signaling doneness. Keep stirring so they cook evenly and add small splashes of the warm chicken broth if the pan threatens to scorch. Overcooking will make shrimp rubbery, so remove them promptly and set aside.
Add asparagus, and stir-fry (about 3-5 minutes) with the salt and chili sauce. Continue to add tablespoons of broth as needed to the pan.: When the asparagus hits the pan it should hiss and release a bright green steam. Stir frying for three to five minutes gives you tender stalks with a pleasant snap. Toss in the small measure of salt and the dashes of chili sauce so each piece gets a glossy coating. The chili sauce adds aromatic heat and a slight sweetness which pairs well with the vegetal asparagus . If the pan dries out, add the warm chicken broth sparingly to create a silky finish without steaming the vegetables into mush.
Return shrimp to pan, and add remaining broth and bring to a slight boil. Add the cornstarch mixture to thicken the sauce.: Reintroducing the shrimp reunites the flavors, and the steam will carry the mingled aromatics. Bringing the mixture to a gentle boil activates the cornstarch, which when added makes the sauce thicken and become glossy, clinging to each piece. Stir gently as the sauce sets to an even sheen. A common pitfall is adding the slurry too early or too cold which can cause uneven thickening or lumps, so stir the slurry smooth before adding and pour slowly while stirring.