Aubergines! These glossy summer beauties are a good source of fibre, vitamins B1 and B6, potassium, magnesium and manganese. This recipe for Caponata – essentially a sweet-sour-savoury salad or dip – hails from Sicily and shows the North African and Middle Eastern influences on the cuisine of that region. Be sure to use good quality red wine vinegar. Serve as part of mezze or on bruschetta.