Caviar is an easy way to order food from the best local restaurants in cities across the U.S. Customers can order for immediate delivery or schedule ahead on Caviars free mobile app for iOS and Android and on the web. Caviar provides customers with quick reliable delivery or pickup service from wherever they are.Caviar is an easy way to order food from the best local restaurants in cities across the U.S. Customers can order for immediate delivery or schedule ahead on Caviars free mobile app for iOS and Android and on the web. Caviar provides customers with quick reliable delivery or pickup service from wherever they are.