Ingredients

3 onions, sliced
4 tablespoons olive oil
3 lbs. skirt steak
3 tablespoons Dijon mustard
1 cup teriyaki sauce
4 cloves garlic, minced

Preparation

Soak the steak in cold water to clean and to remove excess salt that is soaked in the meat. Soak it for 15 minutes, pat dry.
Heat oil in sauté pan and sauté onions until brown and caramelized. Spread garlic and Dijon mustard on the steak. Place cooked onions on top and then teriyaki sauce. Marinate for 6 hours. Either broil the meat for 8 minutes each side, checking often to make sure it is not too overcooked or grill the meat until medium rare on a prepared barbeque or grill pan. If grilling the meat, pour the marinate and onions in a sauce pan and cook until reduced and thickened a little, about 6 minutes.