How can you set and get a cookie in Slim Framework?

Along with the HTTP request currently made, automatically there is parsing done of the cookies. Cookies values are fetched with the getcookie() of the Slim application.

$app = new \Slim\Slim();
$foo = $app->getCookie('foo');

A subsequent request needs to be made along to see the cookie along with the current request. \Slim\Http\Request object is also used to set and get the cookies.