From Brandi Milloy, POPSUGAR Food
In a medium wok or skillet set over medium heat, heat 1 tablespoon of the sesame oil. Add the chicken, and cook until browned on all sides; transfer to a plate. Add the vegetable oil to the same skillet, and cook the garlic and mushrooms until tender.
Meanwhile, add the other tablespoon of sesame oil, soy sauce, hoisin sauce, ginger, rice wine vinegar, and sriracha to a mason jar, and shake to mix.
Add the chicken back to the pan with mushrooms and garlic. Add the water chestnuts, pour sauce over the dish, and toss to coat; cook until just heated through.
Serve with leaves of butter lettuce and green onions.