Very Important! Gelbwurst is low in fat and contains: No Nitrates, No Preservatives, No Monosodium Glutamate, No Artificial Coloring, No Fillers. In Germany they call it a diet bologna because it is low in fat and salt. It originated in the Black Forest region and Bavaria. It is composed of veal and pork mildly spiced with nutmeg, white pepper, and ginger. Slice like bologna.