Websites often store cookies on your hard disk. Cookies help websites identify you when you return so the site can show you pages appropriate for you.
Cookies are normally harmless, but sometimes people want to remove them.
Important:Changing your cookie preferences or removing cookies may cause similar changes in other applications.
To remove cookies:
Choose Action menu > Preferences and click Security. (The Action menu is near the upper-right corner of the Safari window, and looks like a gear.)
Click Show Cookies.
Select one or more cookies and click Remove, or click Remove All.
When you finish removing cookies, click Done.