Credit for this goes to my neighbor, Laura Wiltz.
1/4 c. vegetable oil
1/4 c. soy sauce
1 t. celery salt
2 T. lemon juice
2 T. minced garlic
2 green onions sliced
Black Pepper to taste (about 5-6 twists of my grinder)
Lay Flank Steak Flat and put in a Gallon Zip Lock. Pour in Marinade. Allow to marinade 2 hours at room temp, turning occasionally. Many times I've marinaded it overnight in fridge and it's great! Enjoy!