It wasn't until 1919, though, that Aperol made its debut in Padua. The recipe for the orange-coloured aperitif took the Barbieri brothers seven years to perfect – and remains intact to this day.

Unsurprisingly, Pomello is made from pomelos (a more delicate variety of the grapefruit), grown in California, and elderflower, a well-loved flower in Sweden. The result is a sweet aperitif tempered ...