The tobacco spit glaze is known as mochaware. It is a combination of tobacco
juice and human urine, and was used primarily by the British to glaze
ironstone. The use of these ingredients producs a curious dendritic pattern on
the pottery. We have been finding a lot of it at the Presidio of San Diego dig
(where I tend to call it "pissware").
 
Anita Cohen-Williams; Reference Services; Hayden Library
Arizona State University, Tempe, AZ  85287-1006
PHONE: (602) 965-4579              FAX: (602) 965-9169
INTERNET: [log in to unmask] Owner: HISTARCH