Italy's Favourite Tuna* in Olive Oil. Thanks to its unmistakable flavour, its distinctive pink colour and superior quality, Rio Mare Tuna has always been Italy's number one choice for tuna. Premium-quality Rio Mare tuna in Extra Virgin Olive Oil has an extraordinary flavour that is the result of a special seasoning process and the addition of excellent quality extra virgin olive oil made from the finest olives. Ideal for all traditional Mediterranean tuna-based dishes, excellent with tomatoes and onions or as a sandwich filling.