Baptizing in Beer

"Since as we have learned from your report, it sometimes happens because of the scarcity of water, that infants of your lands are baptized in beer, we reply to you in the tenor of those present that, since according to evangelical doctrine it is necessary "to be reborn from water and the Holy Ghost" (John III:5) they are not to be considered rightly baptized who are baptized in beer."

-Cum sicut ex, Pope Gregory IX to Archbishop Sigurd of Norway, 13c

I find it funny that beer was more available than water in Norway in the 13th century.