Pisco Sour Inspires Sweet-Talking Promoters for Peruvian Spirit

I learned a few things when I was hiking the Inca trail to the ruins of the Machu Picchu citadel in Peru.

For instance, an altitude-sickness headache at 14,000 feet makes your head feel like it’s going to explode. The Incas were mighty handy with stonework. And the national cocktail of Peru, the pisco sour, is delicious.