Char Crust Original Hickory Grilled Rub ... the secret to perfect steak!. By far, the most popular Char Crust rub! This is the original "family secret" blend of natural ingredients that creates a delicious charred crust on the outside... seals the juices inside. Use it under your broiler,on the grill, even on a rotisserie for hickory-charred look and taste. Easy to use with fabulous results!