Carne Asada

Ingredients
2 pounds of flank steak or skirt steak
The juice of 1 orange
The juice of 2 limes
1/4 cup of light beer
2 tablespoons of Kikkoman Soy Sauce
2 tablespoons of vegetable oil
Fresh ground pepper to taste
1 large white onion sliced optional
Vegetable oil to brush the grill before grilling
TO SERVE:
Corn tortillas
Guacamole
Salsa
Lime wedges
Grilled green onions and nopales or a salad of your choice.

Instructions
Place the flank steak in a large baking dish and, if using the sliced onion, spread the slices over the meat.
In a medium-sized bowl mix together the orange juice, lime juice, light beer, Kikkoman soy sauce, vegetable oil, and freshly ground black pepper.