In a small bowl, whisk together all of the marinade ingredients.
Lightly score the beef on bowl sides and place in a shallow dish or ziploc bag. Add in the marinade and let sit (covered if using a dish) in the fridge 1 - 24 hours.
Remove marinated meat from the fridge and let sit at room temp for 1 hour. After 30 minutes, turn the broiler on to high and place your cast iron skillet under the broiler. Let the skillet/broiler preheat for the remaining 30 minutes.
Quickly remove the skillet from the oven and carefully place the meat in it (discarding the marinade) and return it to the oven for 5 - 6 minutes per side.
Once cooked, let the meat rest for 7 minutes on a cutting board (you can lightly tent it with aluminum foil to keep it from cooling) prior to slicing. This will lock the juices in. When rested, slice against the grain and serve over the Asian Salad Mix. A delicious and simple way to elevate a store-bought salad!