The pumpkin spice latte from Starbucks has a cult-like following every fall. However, its recipe includes artificial flavors. A latte from Libby’s Pumpkin does not. The dialogue was simple. “Can’t make it to the coffee shop? Whip up our 100 percent pure pumpkin latte instead.” Nestl√©’s most successful social post, worldwide, the week it was posted. Liked 23K times on Facebook.