Biltong relatively mild concentration of coriander oil (1.6%). In the two strains that were not effectively killed, "Bacillus cereus" and "Enterococcus faecalis", the coriander oil reduced their growth significantly. The need for food preservation in the new colony was pressing. Building up herds of livestock took a long time, but with game in abundance in South Africa, traditional methods were called upon to preserve the meat of large African animals such as the eland in a warm climate. Iceboxes and refrigerators had not been invented yet. Biltong as it is today evolved from the dried meat carried by the wagon-travelling Voortrekkers,
Biltong months when the risk of bacterial growth and mould would be at a minimum. Some recipes require the meat to be marinated in a vinegar solution (grape vinegar is traditional but balsamic and cider also work very well) for a few hours, then the vinegar is poured off before the meat is flavoured with salt and spices. The spice mix is sprinkled liberally over the meat and rubbed in. Saltpetre is optional and can be added as an extra preservative (necessary only for wet biltong that is not going to be frozen). The meat should then be left for a