Susan B, it was actually a generic Ad for all types of Tea!

'I like a nice cup of tea in the Morning,
Just to start the day, you see
Then at half past eleven, then my idea of Heaven
is a nice cup of tea.
I like a nice cup of tea with my dinner
and a nice cup of tea with my Tea,
And when it's time for bed,
there's a lot to be said
for a nice cup of tea."