I recently ran into a problem where I had a suite of applications hosted on a set of subdomains that all needed to be able to share a single cookie. Any cookies other than the shared cookie needed to stay specific to their subdomain, but this one shared cookie needed to be accessible to any of them. I also wanted to accomplish this using Laravel's Cookie facade.

https://gistlog.co/JacobBennett/15558410de2a394373ac