Heat the rocks

• Build a fire and place clean, smooth river rocks in the embers.
• Let the rocks heat until very hot, about 30 min.

Season the steak

• Pat the beef tenderloin steak dry.
• Rub with olive oil and season generously with salt and black pepper.

Grill on the hot rocks

• Using tongs, transfer the hot rocks to a stable, level spot.
• Lay the steak directly on the rocks and cook, turning once, until browned on both sides.
• Check the core temperature with the thermometer for the desired doneness.

Rest and serve

• Take the steak off the rocks and let it rest before slicing.
• Slice and serve hot.