Question: How do you reinvigorate dried and brittle birch bark?
Options:
Place it into a sauna and allow the steamy air to moisten the bark until it is pliable to the touch.
Place it into a sauna and allow the steamy air to moisten the bark until it is dry to the touch.
Answer: Place it into a sauna and allow the steamy air to moisten the bark until it is pliable to the touch.