Shrimp and Pak Choi Stir-Fry

Found on Pinterest, the author of this recipe goes by ieatthepeach. The velveting step that the author suggests takes a little extra time, but it is worth it. The end result is plump, juicy shrimp that will not overcook.
Serves: 6 with rice
For velveting the shrimp:
1 large Egg white
1 Tablespoon Cornstarch
2 teaspoons Rice wine, dry sherry, or rice vinegar
1 teaspoon Soy sauce
1 pound large Shrimp, peeled and deveined
1 Tablespoon Peanut, canola, or vegetable oil
Water for poaching
For the stir-fry:
1 Tablespoon Peanut, canola, or vegetable oil
1 Tablespoon minced fresh ginger
2 to 3 Garlic cloves, minced
1 Tablespoon Chili-garlic sauce, or to taste
4 Scallions, white and green parts separated and thinly sliced
1 pound Pak choi, washed and thoroughly dried
1/2 pound Snow peas
2 Tablespoons Rice wine, dry sherry, or rice vinegar
1 Tablespoon Soy sauce
1/2 cup toasted chopped Cashews
Cooked white or brown Rice for serving
Toasted Sesame seeds for garnish
Directions:
1. In a medium mixing bowl, combine egg white, cornstarch, wine or vinegar, and soy sauce, and whisk until smooth.
2. Add shrimp and toss to coat. Cover the bowl and refrigerate for at least 30 minutes while you prep the other ingredients. (This step can be done a day ahead.)
3. While the shrimp marinates, separate the pak choi into leaves and chop into 2-3″ pieces. If desired, trim and de-string the snow peas. Set aside.
4. Bring a pot of water to a boil over medium-high heat. Add 1 Tablespoon oil and reduce the heat to low so that the water is at a bare simmer. Add shrimp and cook, stirring constantly, for 1 minute. Drain the shrimp thoroughly, and set aside.
5. Place a large skillet or wok (not nonstick) over the highest heat the pan can handle. Heat until the pan is very hot: A drop of water flicked on the surface should sizzle and evaporate within a second or two.
6. Swirl 1 Tablespoon of oil into the hot pan, then add ginger, garlic, chili-garlic sauce, and the white parts of the scallions, and stir-fry for about 10 seconds.
7. Add the snow peas and pak choi and stir-fry for 2 to 3 minutes, or until the pak choi leaves are wilted
8. Add wine or vinegar and soy sauce and stir-fry for 1 minute more, or until the pak choi stems are starting to get tender. Add shrimp and stir-fry for another minute, or until the shrimp is cooked through, the veggies are tender, and everything is coated with sauce.
9. Remove from the heat, and mix in the cashews and the green parts of the scallions. Spoon over rice, garnish with sesame seeds, and serve immediately.