Ocado Organic Red Onions. Our Organic Red Onions are grown using organic farming methods which avoid the use of artificial fertilisers and avoid agrochemical pesticides. Our Organic Red Onions have a deep red shiny skin and are firm to the touch. They have a crisp flavour and are great in salads and sandwiches. Serving Suggestion Mild enough to eat raw, remove the top and tail of the onion, peel then chop into thickly sliced rings. Serve with salad and a dash of balsamic vinegar. Certification body - Soil Association Certification number - GB-ORG-05 UK/Non-UK Agriculture