In all the 18th or 19th century movies or series I've seen, people are always drinking tea. ALWAYS! Plus they say things like "That's not my cup of TEA" , or "I wouldn't do that for all the TEA in China." What is this tea they're drinking? Was there one certain common tea that everyone had?
I am decently sure it was just plain orange pekoe tea, because that was the age of the exploration to china ect. where they grew the tea.

I am decently sure it was just plain orange pekoe tea, because that was the age of the exploration to china ect. where they grew the tea.
References :
Chicory was an herb used to make a tea back then. It was boiled like tea and in the Americas during that time that could be what they were drinking.
References :