Maple syrup, caviar, Meyer lemons, agave. No, these are not the items needed for some exotic dish. Spas around the globe are doing without the big-name brand cosmetic products and instead offering treatments that utilize indigenous ingredients, often sourced on site. The scrubs, lotions, creams and exfoliants sound so mouthwatering, you'd be forgiven for wanting to eat them. Here, 15 of the yummiest treatments worth packing a bag for.