The Food Standards Agency (FSA) Food Industry Guide to Good Hygiene Practice: Sandwich Bars and Similar Food Service Outlets, provides advice on achieving the principles of 'best practice' during the preparation of sandwiches. The primary objective of the hygiene rules is to ensure a high level of food safety to protect customers. It covers the activities carried out by foodservice sandwich outlets that prepare and sell sandwiches open-served to be consumed directly by customers or wrapped and pre-packaged before they are sold.