Ever wondered what Internet sites store inside cookies when you visit them? This line will dump all cookies:
PS> dir ([system.environment]::GetFolderPath('Cookies'))
Cookies are text files. In older versions of IE, the file name contains the site URL that stored the cookie. To list all cookies from Google, you could try this:
PS> dir ([system.environment]::GetFolderPath('Cookies')) | Where-Object { $_.Name -like '*google*' }
And to actually read the cookie content, simply add Get-Content:
PS> dir ([system.environment]::GetFolderPath('Cookies')) | Where-Object { $_.Name -like '*google*' } | Get-Content
Likewise, by adding Remove-Item you could delete selected or all cookies.