Special Brewing Instructions:
At start of boil, put dried lingonberries in the blender and cover with wort from the kettle. Puree, cool, and add the pectic enzyme. Refrigerate for one 1 day. Add this mix to the fermenter on day two of fermentation.
After 30 minutes of the boil, remove two cups of wort to a smaller pot. Heat the wort to keep it hot, but do not boil it. Add the yarrow, meadowsweet, and birch syrup. Steep this mix until the end of the boil, then strain it into to the kettle.
Add the cranberry concentrate and honey immediately after flame-out (end of boil).
Residue of this gruit was recovered from the grave of the Egtved Girl, and was reproduced as "Kvasir" by Dr. Pat McGovern and Dogfish Head Craft Brewery in 2013. This is what the Danes drank before they were Danes, over two thousand years before they were even Vikings, in a time before Christ or Odin, when they worshiped the sun. Brew it and think of her, a young woman with short blond hair and a braided skirt, who died in ca. 1370 BC.
McGovern, Pat (2017). Ancient Brews: Rediscovered and Re-created. New York, NY: W. W. Norton & Company. pg. 172-4.
https://en.wikipedia.org/wiki/Egtved_Girl
https://www.dogfish.com/brewery/beer/kvasir