These steak tips are full of flavor. They are just as good grilled outdoors or indoors over a cast iron grill pan. They are marinated between 4 - 24 hours. I normally marinate these overnight but they can be marinated as long as 48 hours. The marinade is later transformed into a sauce. Because my 12 yr. old daughter loves steak, she is now the one who prepares these tips, marinade and all. It's one of her favorites! The cooking time includes the overnight marinating time.