Warm the grill to appropriate setting for barbecue, lower heat the better, but at a longer cooking time.
Sprinkle everything but Garlic Powder and Coriander on the steaks while grill is heating, then lightly shake on the Garlic and Coriander.
Cook the blank side of steak first for about seven to ten minutes, then flip and repeat.
Cook to desired rarity, for medium cook for about another 5 minutes after the first fourteen, depending on your heat setting. Cook until the internal temperature is at least 145F, followed by a 3 minute rest before serving.