Cook the rice according to the instructions on the package.
While the rice is cooking, peel the onions and thinly slice them. Chop the cilantro.
Once the rice is cooked, drain it and rinse under cold water. In a large bowl, mix together the rice, tuna, sliced onions, cilantro, 1 tablespoon of olive oil (per portion), salt & pepper. Enjoy!
Average estimated amount for one serving