The book is a rare copy under the title "Hochnutzbar und bewährte Edle Bierbrau-Arts", which was printed in Gotha in 1690. It was written by the doctor David Kellner (1644–1725), who was baptised in Gotha's St Margaret's Church.
"The valuable book was in a poor state of conservation," reports Dr Kathrin Paasch. "We are all the more grateful that it has now been expertly restored on the initiative of the Mayor of Gotha and with funds from the Paulaner brewery." In addition to printed recipes for brewing beer, the book contains a series of unnamed handwritten entries praising the drinking and brewing habits of all peoples of the world and numerous places in the German-speaking world for their beer brewing skills. Gotha is also mentioned twice.
