Regular oil production involves heating of seeds prior to extraction of the oils which are then processed and refined. Cold-pressed oils are obtained by natural means by extracting the oils at room temperature without the application of heat or chemical treatments. Cold-pressed oils are therefore unfiltered and minimally processed allowing them to offer the best nutritional value, however, they have a shorter shelf-life than their processed counterparts. Cold-pressed oils also have a lower yield which often means they are more expensive. Since they are unrefined it means they have a low smoke point and are best used in raw applications or very low-temperature cooking.