Can anything be more abstractive than starting sightseeing with a giant bottle? In New Zealand: absolutely. Especially in the town of Paeroa, home of the iconic Lemon & Paeroa drink. It has a sweet, citrusy taste and feels like something halfway between Sprite and some solid childhood chemistry experiment. The drink was created right here in 1907, using local mineral water. The L&P logo is everywhere, and the enormous brown bottle is a source of genuine local pride. From Paeroa I headed to the Karangahake Gorge – a former gold-mining hub. There are two walking tracks here, each about 2.5 kilometres long. The first, Windows Walk, winds through forest and…