Oh yes. Novices and laypeople aren't allowed to drink coffee (which by this time is extremely rare because Earth has been invaded by the Ori and there has been much destruction, but fortunately someone took some coffee tree saplings offworld and planted them in a nice rainforest-like planet); that's reserved for when they become full members of the sect, because the Quaerentes think that coffee opens the mind to the most secret teachings of Rodney McKay and that it is needed to understand the mysteries of the De physica.