Our intrepid host Mareesa Stertz takes a trip across the Atlantic to visit Sanson, a British expat in Spain, who credits echinopsis peruviana, a variety of the San Pedro cactus, with helping him beat his alcoholism and depression. He now introduces others to the practice, but don’t call him a shaman — he says it’s the plant and the person taking it who do all the work (“You’re your best therapist; taking the plant is like opening the box to yourself”).