In Croatia, we measure our good behaviour with a generous helping of Neapolitan wafer. Which means, baka or mama always keep a secret stash of napolitanke biscuits.Napolitanke... mmm... thin wafer sheets stuck together with gooey, silky chocolate filling. This is the stuff our childhood highs were made of.At special occasions, store-bought napolitanke would give way to the sumptuous homemade oblatne. In reality, this Croatian wafer cake is mama’s artisanal take on the Neapolitan wafer.The…