After a removal I finally found the box with my songbooks. There is a scientifc edition of some student songs: Commersbuch: [ed. with crit. annot. by] Max Friedländer; 3. ed., Leipzig [1911].
It is a reliable source. The author's name he gives as Wittekind. The 12 stanzas (of the original 102) given here were first publ. in the Leipziger Commersbuch, 1815, and in the Kommers- und Liederbuch by Methfessel, 1818, containing mostly student circumstances.
The drink was originally a liquor containig small pieces of gold, therefore called Goldwasser (goldwater), originally produced in Danzig. Maybe because of the reddish colour the name was transferred to a punch made of red wine, sugar melted by burning rum, and some spices. Whenever we prepared it in my student days, we sang this song in the shorter form.
The number of stanzas is varying from 8 to 12 in newer songbooks.