PLU stands for Price Look Up. PLU’s are products that are sold by the venue. The PLU is where the sell prices are kept, and the barcodes are added for scanning products at a terminal. PLU’s are linked back to a stock item to deduct the portion of stock used. This is known as the recipe. A single PLU can be linked to multiple stock items. Products that are not stock controlled only require the PLU without the recipe link.