With fat up to this level I, Joseph Beuys poses questions about the use of energy with almost minimalist clarity. A continuous horizontal line drawn on the surface of the zinc plates in pencil indicates the potential fill level of the fat, which is invisibly trapped as energy between the plates. Due to its easily changing aggregate states, this substance is particularly suitable for visualizing an energy potential. The fragile placement of the iron rod suggests a sense of floating lightness, which stands in stark contrast to the physical heaviness of the material. The object was acquired for the Kunstsammlung by the Friends in 2003.