Sassafras and black birch (i.e. wintergreen, more or less) are the dominant notes here; the other flavors blend into a citrusy background. This is a refreshing, summery drink, a bit acidic — imagine a cross between unsweetened herb tea and a nice mild ale.
Fascinating to see yarrow already in use as a brewing herb 3500 years ago. Here, it’s in combination with several bog plants: sweet gale, meadowsweet, cranberries and lingonberries.