    def clear_cookie(self, cookie_name, **kwargs):
        """Clear a cookie

        overrides RequestHandler to always handle __Host- prefix correctly
        """
        if cookie_name.startswith("__Host-"):
            kwargs["path"] = "/"
            kwargs["secure"] = True
        return super().clear_cookie(cookie_name, **kwargs)
Clear a cookie

overrides RequestHandler to always handle __Host- prefix correctly
jupyterhub/handlers/base.py