The lechero was also the milkman who would come door-to-door to my aunt Esther's house in León, Guanajuato, and leave a couple of glass bottles of milk, from Leche San Marcos. Then one year, the milkman no longer came by, and we had to walk to the corner store to buy our milk. The cartons, with their aluminum foil-type lining, were strange to me, mostly because they were small and nothing like the gallon jugs I was used to back home.