History of the hamburger hand at home using specialized chisels, intensive manual labor that severely limited the amount that could be produced. It is very likely that the invention of the meat grinder contributed directly to the popularization of Hamburg steak, while the steak gradually became distant from its German roots in the minds of many Americans. Minced meat also came to be used in other popular American foods, including hot dogs and meatloaf. Another development facilitating the invention and popularization of the proto-hamburger was the increased production of beef through livestock intensification. By the late 19th century, an increasing amount of land was
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