Add enough olive oil to liberally coat the bottom of a cast iron skillet. Add a few splashed of sesame oil for extra flavor if desired. Heat to medium high.
2-4 tablespoon olive oil, splash sesame oil
Cook fish sesame seed side down for about 5 minutes. Sprinkle more sesame seeds on the other side before flipping over. Cook about 5 more minutes until done.
Serve with citrus wedges on the side so dinners can squeeze on top.