Latte art microfoam, which is a foam of air in milk. Milk itself is an emulsion of butterfat in water, while coffee is a mixture of coffee solids in water. Neither of these colloids are stable – crema dissipates from espresso, while microfoam separates into drier foam and liquid milk – both degrading significantly in a matter of seconds, and thus latte art lasts only briefly. Latte art requires first producing espresso with crema and microfoam, and then combining these to make latte art. See microfoam: procedure for how microfoam is made; this article concentrates on the latte art once the foam
Pumpkin Spice Latte messaging. Starbucks has written that their target market represents the demographics using social media most heavily, including on Twitter, Facebook, and Instagram. In 2013, the company added a gaming element to the drink's arrival, allowing customers to "unlock" the drink at Starbucks stores nearby by ordering the drink with a code before its official sale date. Between August 2012 and January 2014, there were over 29,000 tweets with the hash tag "#PSL", and in a single fall day use of the PSL hash tag exceeded 12 million. Since the introduction of the Starbucks Pumpkin Spice Latte, other companies have created