1.
In a small bowl, mix together the sesame oil, rice vinegar, sriracha, soy sauce and oyster sauce.
2.
Heat a large drizzle of olive oil (1½ tbsp) in a large pan over medium high heat.
3.
Add the ginger, garlic, onion, and the white parts of the spring onion. Stir often and allow to cook for about 3 minutes.
4.
Add the protein and mushrooms to the pan and cook until browned and cooked through.
5.
Pour in your sauce and cook for a couple minutes, stirring often.
6.
Add the spring onions, stir, and then serve in the large lettuce leaves.