If using marinade, mix all ingredients together in a zip top bag, add skirt steak, coat well and marinate refrigerated until ready to cook. Marinate for at least 30 minutes if time allows.
In an iron skillet over medium-medium high heat place the skirt steak. Slightly press down to create sear. For medium rare, cook for 3 minutes. Flip steak and cook for an additional 3 minutes. If more done steak is desired cook for longer.
Let steak rest about 10 minutes, then cut thin slices against the grain.
