Oldtimers Salty Salmiak Cobblestone Liquorice Drop. 225g. Salty Salmiak Cobblestone Liquorice. "The Van Slooten factory is located in one of the numerous picturesque villages found in the North of the Netherlands, where the streets are paved with traditional cobblestones. Van Slooten has created liquorice with a very strong liquorice flavour in the same shape as these little cobblestones."