This has always been the favorite tone of the Greeks, due to the special taste and unparalleled quality that only the excellent processing of the quality tone “yellow-green” can offer. The Rio Mare tone processing system is very simple. The tuna is steamed and then worked by hand (just like the good old days) to ensure thorough cleaning and excellent quality. It is then canned together with pure olive oil and a pinch of sea salt, without preservatives and artificial flavors. This is why Rio Mare tuna in olive oil is a healthy, genuine and vital food for the whole family. It is rich in phosphorus and contains easily absorbable essential proteins and unsaturated fatty acids that help fight cholesterol. So tender … cut with the heart of a lettuce!