A study was carried out to investigate the potential of onion by-products as food ingredients. Roldan, Sanchez-Moreno, Ancos, and Cano (2008) developed a paste from onion by-products (mixture of ‘Figueres’ and ‘Recas’ varieties); they found that it was best to use a pasteurisation process to product the paste. This created a number of benefits such as preserving the bio-active compounds, it also maintained a significant antioxidant potential and, functionally, from a producer’s point of view, it did not allow browning to occur