Saute the chicken and shrimp in a large skillet. Once cooked through, set aside.
Once fully cooked, set the chicken and shrimp aside.
In the same pan, sauté the veggies.
While the veggies are cooking, make the garlic ginger sauce by adding the garlic, ginger, stock, soy sauce, vinegar sesame oil, sugar and ground white pepper to a medium saucepan.
Add the chicken and shrimp back to the pan with the veggies, then pour the garlic ginger sauce over the top and cook for an additional 2 minutes.
Garnish the dish with a drizzle of sesame oil, toasted sesame seeds, and chopped scallions.
Adjust the level of spiciness by omitting the serrano peppers (or adding more if you want more spice!)