Halal is often used in reference to foods and drinks, i.e. foods that are permissible for Muslims to eat or drink under Islamic law. The criteria specifies both what foods are allowed, and how the food must be prepared. The foods addressed are mostly types of meat and animal tissue.
The food must come from a supplier that uses halal practices. Specifically, the slaughter must be performed by a Muslim. Then, the animal must be slaughtered with a sharp knife by cutting the throat, windpipe and the blood vessels in the neck, causing the animal's death without cutting the spinal cord. Lastly, the blood from the veins must be drained.