The tea must always be served in glass. Never in cups and saucers. Finer homes ensure their tea bearers learn the art of pouring tea from a much higher place than a guest would expect. The higher one can pour it from, the superior training the host if credited for. The snootier that host can be. But also it is believed that the foam helps carry the flavor better.
In fact, at the opening night of the Sacred Music Festival at Fez, the guardsmen to His Majesty, The King of Morocco, were serving the special guests tea. They were dressed in ceremonial garb and impressed all of us with their ease in serving tea from much higher point than I have ever seen it poured. I am posting a picture below of the guardsmen as they sat waiting to be called upon for more such pouring of tea.










