The Wagon Peoples also drink fermented bosk milk curds.
The quotes on bosk milk are numerous, verr milk is mentioned in book 10 I
believe and sand kaiila milk is also mentioned in the tahari region.
"When the meat was ready Kamchak ate his fill, and drank down, too, a flagon
of bosk milk; I did the same, though the milk, at least for me, did not sit
too well with the Paga of the afternoon. (Nomads of Gor, page 139)