Yellowfin tuna is known as Atun Claro in Spain. This is some intensely flavorful tuna. The yellowfin tuna is richer in fats than albacore, which makes for a reddish hue, a moister texture, and a luscious flavor. Ortiz's fish are line caught, one at a time, off the northwestern coast of Spain. They're then hand filleted at sea, and preserved in good olive oil. A whole new world of tuna! In a pretty jar for ease and lovely presentation. Ortiz has been preserving fish for 100 years. They exemplify the balance between modern techniques and scrupulous respect for traditional fishing methods, which means their products are best for the environment and your discerning taste.