1 pound sirloin steak, thinly sliced
ground black pepper
1/2 cup dark soy sauce
juice of 3 lemons
1/8 tablespoons olive oil, for marinade
2 big white onion, sliced 1/4" horizontally to make onion rings
olive or canola oil for frying
Sprinkle freshly ground pepper on both sides of the steaks. Make a marinade of soy sauce, lemon juice, and olive oil and marinate the steaks for at least 5 minutes.
Squeeze liquid out from steak with your hand to remove extra soy marinade and put in a bowl to make sauce later. Set aside all steaks on a plate.
Brown all onion rings in a pan with oil and set aside on one plate. Heat steak pan to high and add a little oil. Cook each steak on both sides and set all aside on a clean plate.
Heat pan on high and add 2 tablespoons olive oil. Add the remaining marinade liquid and glaze hot pan. Reduce to make sauce and set aside. Put all steaks back to the pan, add cooked onions, and add sauce.