It’s easy enough to view a list of sites that have cookies in Safari, but if you want to actually see the cookie and parameters used by a particular site, you’ll need to dive a bit deeper into the interface.
In a nutshell:
– Navigate to a web site.
– Select Show Web Inspector from the Develop menu (follow the headline link for instructions on turning on that menu if it doesn’t appear for you).
– Click the Storage tab in the web pane that appears.
– Click the Cookies item on the left side.
Worth taking a minute to give this a try. Kind of fascinating.
Cookies are actually stored in ~/Library/Cookies/Cookies.binarycookies, and have been for some time (Safari 6?). You can also guess this from the filename, but they aren’t stored in plain text, hence the need for Developer Mode or some utility to read the file directly.