I read about the [Tea Leaf Paradox][1] on Wikipedia, but didn't understand enough, so I wanted to see the secondary flow with an experiment. I set it up and filmed [this][2]. It's water and some tea from different tea bags. I stir it for a minute and then see what happens when the stirring stops.

I am not able to see the secondary flow as shown in this figure from the Wikipedia article:

[![Secondary flow][3]][3]

Am I doing something wrong?

  [1]: https://en.wikipedia.org/wiki/Tea_leaf_paradox
  [2]: https://www.youtube.com/watch?v=dGAFxs63SlE
  [3]: https://i.sstatic.net/GEqop.png