Complex sentence: Boerewors must contain at least 90 percent meat-always containing beef, as well as lamb or pork or a mixture of lamb and pork, the other 10% is made up of spices and other ingredients.
Split into simpler sentences: Boerewors must contain at least 90 percent meat-always containing beef, as well as lamb or pork or a mixture of lamb and pork. The other 10% is made up of spices and other ingredients.