Due to livestock farming and industrial slaughter methods the prices for animal products decreased extremely in the recent past. While just some decades ago farm animals where highly valued and mostly all of their resources were further processed, in present times only the tastiest and easiest to prepare parts of an animal are actually used. Today less then half of an animal is really further processed in Germany. All the rest goes to animal rendering plants and thus more or less directly to the garbage can. Since we never get in contact with the slaughter process of our food, we started to be disgusted by the by-products of animals. But are slaughter by-products really nothing more than waste? Is our rejective attitude towards these materials justified and legitimate? Or shouldn’t we, if we really need to kill an animal, at least appreciate all of its resources instead?