Step 1

Place the soy sauce, orange juice, and tuna steaks into a bag, and let marinate in the fridge for 30 minutes.

Step 2

In the meantime, prepare the salsa. Cut the oranges into segments (see How to Segment an Orange if you don't know how), and place into a bowl.

Step 3

Add the jalapeno, mint, shallot, oil, and 1/8 tsp salt, and stir to combine.

Step 4

Add the avocado and remaining 1/8 tsp salt, and toss gently, just enough to coat the avocado with the other ingredients.

Step 5

Preheat a skillet, preferably cast iron, over high heat, until the pan starts to smoke.

Step 6

Add the high heat cooking oil, then sear the tuna on each side for about 60-90 seconds, until browned. The pan should be hot enough that it sizzles loudly when you add the tuna.

Step 7

Once the bottom and top are seared and golden, rub any leftover exposed pink surfaces on the sides against the pan, to cook all exterior parts of the fish.

Step 8

Thinly slice the fish, then arrange on a plate with the orange avocado salsa on the side. Enjoy!