Memorial Day isn't the only holiday in May. There's a lesser known, but perhaps tastier holiday, a few days before. In honor of National Italian Beef Day May 27, Chicago's iconic Italian Beef restaurant Buona will be giving away free, slow-roasted Italian beef sandwiches May 27-30, the restaurant says.

In order to get the free sandwich, customers will have to download the MyBuona App. According to the restaurant, non-app users can download the MyBuona app to get a free beef in their rewards wallet within 24 hours, if they download by Sunday, May 30. (limit 1 per member). Existing app users can get any of the beefs for free with up to two toppings.