Wonder how he got that idea:

> “Chiva,” his uncle said. Goat, the Mexican slang term for black tar heroin. “This is how we make our money.” Cora Indian campesinos grew the poppies in the mountains above Xalisco. They harvested the opium goo from the flowers and sold it to cookers whom Enrique’s uncles knew. A newly cooked kilo of vinegary, sticky chiva would head north in a boom box or a backpack within a couple days, virtually uncut, and often hit L.A. streets only a week after the goo was drawn from the poppy. As Enrique’s uncle spoke, he rolled little pieces of the gunk into balls the size of BBs.

"Dreamland" https://www.amazon.com/Dreamland-True-Americas-Opiate-Epidem...