People have taken to putting butter in their coffee. The practice is polarizing—it sounds awesome to some, disgusting to others—but really, it’s not about how the mixture tastes. “Clarified butter is a great source of energy, satiates you: I get the draw,” coffee writer Oliver Strand told us on Twitter. “But it’s more about diet than flavor.” Let’s discuss. Where It Comes From: Putting butter in morning tea has long been a “thing” in Tibet. “The heart and soul of Tibet” is butter tea, chef Vikas Khanna told us. (Khanna’s cookbook, Return to the Rivers: Recipes and Memories of the...