The active muscles, such as the legs and thighs, are full of blood vessels. These blood vessels contain myoglobin (or muscle hemoglobin), which delivers oxygen to the muscles. The more myoglobin the muscles contain, the darker the muscle. Scientists often refer to these active muscles as slow-twitch fibers.
Background. Beef jerky is a type of snack food that is made by marinating beef in a curing solution and drying it. Meat treated in this way has a long shelf life and a unique flavor. Invention of this meat processing technology is attributed to Native Americans who smoke-dried meat to preserve it.
Meats and Sausages. Jerky. Meat for jerky is is cut into long, thin strips and dried. Jerky was always popular with trappers and soldiers because it was light, easy to carry, kept well and provided plenty of energy. For the same reasons jerky is a popular snack and survival food today.