Snack foods are foods which can be eaten in place of, or in between, meals. They are convenient because they are quick and easy to eat. The term 'snack food' does not only apply to some of the newer products such as potato crisps, but it also includes many traditional food items.
Most snack foods are intended for immediate consumption and have a shelf-life of only 1-2 days. Such food products may be sold loose without packaging, or in small polythene or paper packages which contain a portion for sale. If required, the shelf-life may be extended considerably through the use of adequate packaging.
In most countries people from nearly all income groups consume snack food products. For example, a recent study in Indonesia revealed that the largest consumer groups in the urban areas were workers and schoolchildren.
Snack foods add variety to the diet which partially explains their popularity. They may also play a cultural role on special occasions or when offered to visitors.