Skógafoss is one of the most powerful and largest waterfalls in Iceland. To give this quadrupel some extra power, it has been infused with Þúfan. Þúfan is a refined version of the Brennivín ‘aquavit’ spirit, an artisanal liquor from Iceland. Cumin, yarrow, and reed grass are the herbs you will find in the Þúfa Brennivín flavors. Its softened texture is because these herbs are all picked carefully by hand.