Combine the soy and hosin sauce, the rice vinegar, and sherry in a small bowl and whisk vigorously.

In a large skillet over medium high heat, coat with oil and saute ginger and garlic for 30 seconds. Add sauce mixture and cole slaw and cook for 2 mins.

Add chicken and onions to pan and cook for 2 additional mins. Remove from heat and add cashews, serve on lettuce leaves.