IN A DARKENED ROOM LIT ONLY BY A RING OF CANDLES, A CONE OF ICE AND GRAVEL SUSPENDED AT THE TOP OF A TEEPEE-LIKE FRAME, SLOWLY MELTS, SENDING DROPLETS OF WATER AND STONES DOWN ONTO THE HEATED SURFACE OF AN INVERTED WOK, CREATING PING AND SIZZLE SOUNDS AND PUFFS OF STEAM