Tools > Internet Options > Settings
Then on the popup which should be titled “Temporary Internet Files and History Settings, click on “View Files”.
You should be able to delete a single cookie.
Cookies are typically identified by the filename cookie:@Website
For example, here I would be
you are best using the search in the top right corner to find the cookie for the domain you want.
The folder that this is in is
C:Users%username%AppDataLocalMicrosoftWindowsTemporary Internet Files