As a shop we try to have high quality authentic products. But sometimes we find on something special and we ad it to our shop even if it's not autentic.
We found a range of cups which looks just right (especially the white one). Most re-enactors only notice that it's not stone ware after all by picking it up or getting it thrown at them.They don't break, you can stack them and they are dishwasher proof. They can contain around 0,4 l.
We DO NOT advertise them to use instead of authentic pottery, BUT they are very useful in situations where you would use something modern instead of authentic because of breaking hazard of the pottery. E.g. water carriers on a battlefield, public at beer tents, medieval taverns on events, children, group material for guests...