Bark ruf - Import export

RUF bark Briquettes have extremely long burning time up to 10-16 hours. That is not to say you can come down next morning, give them a poke and they burst into flames, rather that there is still a good warmth in the stove and a glow from the ashes. Bark does produce extra ash, more ash creates a bigger heat store, but also more ash to dispose of the next day.