Ocado Organic Leeks. These firm, tightly layered leeks have a subtle sweet flavour. They are a versatile vegetable and can be roasted, baked, boiled or stir-fried. Our Organic Leeks are grown using organic farming methods which avoid the use of artificial fertilisers and avoid agrochemical pesticides. Serving Suggestion For a vegetable side, trim and chop into slices 1 cm thick. Roast with a sprinkling of sea salt, a drizzle of olive oil and serve with a knob of butter. Certification body - Soil Association Certification number - GB-ORG-05 UK/Non-UK Agriculture