They call this ostensibly innocuous appetizer la bomba. It just came with our order—most restaurants in BsAs offer a menu ejecutivo (a set, prixe fixe lunch) which includes apps, a drink and dessert. Usually around AR$30 per person. And quite a decent deal considering what the same resto charges for dinner. Oh yeah, la bomba was definitely tasty enough for a ham and cheese croquette. Though I was expecting something more spectacular with that name.