Thank you for the answer. I had tried holding my finger down, however the right click context menu did not appear.
It certainly appears that CCleaner has not properly set this up.
In CCleaner / Options / Cookies:
On my desktop machine I can use my mouse I can right click on any cookie from the list and I get a popup window that allows me to delete the cookie Now. With touch I cannot find a way to do that.
Does anyone have a solution?