Source

File: wp-includes/http.php

function wp_remote_retrieve_cookie( $response, $name ) {
	$cookies = wp_remote_retrieve_cookies( $response );

	if ( empty( $cookies ) ) {
		return '';
	}

	foreach ( $cookies as $cookie ) {
		if ( $cookie->name === $name ) {
			return $cookie;
		}
	}

	return '';
}