Beef and Watercress Stir-Fry

1. In large bowl, marinate beef with minced garlic, ginger, sesame oil and soy sauce for at least 1 hour or overnight in the refrigerator.
2. Coat a hot wok with grapeseed oil. Season beef with kosher salt and freshly ground black pepper; add beef and stir-fry until cooked rare and lightly browned, about 2 minutes.  Transfer to a plate and set aside.
3.  In the same wok, coat again with oil and add scallion whites. Cook about 1 minute to lightly caramelize. Add garlic slices and sauté for 15 seconds. 
4. Add beef back to wok; stir in watercress. Stir-fry until watercress is lightly wilted and shiny. Stir in oyster sauce. Check for flavor, add kosher salt and freshly ground black pepper to taste, if necessary. Serve immediately with mix of white and brown rice.

Photo courtesy of S&W Growers