Break dried chilies into half. Shake off seeds and soak in warm water for 20 minutes. Drain and pat dry with paper towels.
Marinade shrimp with ground pepper, soy sauce, Shao Hsing cooking wine, soy sauce, and pepper for 10 minutes.
Combine all sauce ingredients in a small bowl.
Heat up wok or large fry pan. Once wok is heated, add canola oil followed by ginger, onion, dried chilies, and minced garlic. Fry until ingredients are fragrant, about 2 minutes.
Add Szechuan peppercorn and marinated shrimp and fry for another 3 minutes.
Pour sauce mixture over shrimp. Stir to get shrimp well coated with the sauce.
Add cornstarch mixture and continue to stir fry. Sauce will become thick and bubbly.
Finally, drizzle sesame oil over the shrimp. Stir in sliced green onions and roasted cashew nuts/peanuts (if using).
Transfer to a serving dish and garnish with cilantro (if using).
Remove and serve immediately with steamed rice.
Notes
I did not use roasted peanuts or cashew nuts but this is what it looks like if you added cashew nuts.If you use cashew nuts, please add another 65 calories more per serving.If you use roasted peanuts please add 70 calories more per serving.