Before teapots... or what plain folk used to use to make tea.
Back in the 1950's, my Welsh grandmother would put a small porcelained pot with cold tap water on the stove, then add the ingredients, boil for a while, and then use a strainer as she poured it into her cup. Worked for tea, worked for coffee.
When I worked at Hewlett-Packard in the '70's, there was a man from Ireland who said that in the morning his mother put a big pot of tea on the stove(probably coal-fired, like my grandmother's). He said be the end of the day, that tea was REALLY strong.
Cheers, Eric