A young couple comes to the hanger of a supermarket in the north of Guayaquil where canned tuna are displayed. He stops to take the two cans they buy for the fortnight. But being there they begin to see a tuna in a Mexican salad that they have not tried. They decide to purchase the 160 gram presentation for less than a dollar. In addition to the classic tuna in oil and water, the industry has expanded its offer with new variants and presentations. In the photo, the Nirsa plant. Courtesy In addition to the classic presentations of tuna in oil and water, the rack of this self-service unit bring...