Pumpernickel Pumpernickel Pumpernickel (; ) is a typically heavy, slightly sweet rye bread traditionally made with sourdough starter and coarsely ground rye. It is often made today with a combination of rye flour and whole rye berries. At one time it was traditional peasant fare, but largely during the 20th century various forms became popular through delicatessens and supermarkets. Present-day European and North American pumpernickel differ in several characteristics, including the use of additional leaveners, and, in North America, coloring and flavoring agents, the addition of wheat flour, higher baking temperature, and a dramatically shortened baking time. The word stems from
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was