The liquid attempted to bubble its way back out of the bottle, wheezing like an angry rat and smelling of acid and yeast and human gas.

BBC: Mexico��s ancient drink makes a comeback

Lying in the shadow of the active volcano Mt Tarawera, Rotorua Lakes is an unrivalled natural landscape where water is clean enough to drink, sweet-smelling air comes alive with native birdsong and fern-filled forests are as bright as a bottle of absinthe.

BBC: Lakeside treks in a geothermal land