Slice the cod fillet into two equal weight pieces, ½ lb each fillet. Pat dry with a paper towel.
Fold one piece of the parchment paper in half and place 1 fish fillet in the center and closer to the seam. Repeat with the other half of the fish.
Season each filet with ¼ tsp coarse salt, 1 tbsp coconut aminos, and 1 tsp toasted sesame oil.
To make a paper pouch: Fold the paper over so the two ends meet, enclosing the food. Beginning at either end of the center crease, make small, overlapping diagonal folds around the filling, pleating it all around to make a semicircular airtight package that looks like a half-moon shape calzone. Seal the packet tight. You might need to twist and fold the end tip to secure the envelope.
If use air fryer: place 1 packet inside of the basket. Lightly press the paper pouch down so it won’t get burnt. Air fry at 300F for 15 minutes or until the fish is soft and flaky. Test with a skewer, if it goes in easily, the fish is done. If not, air fry for 5 additional minutes. If your fish is thinner than 1-inch, reduce the cook time by 5 minutes.
If use oven: Place both packets over a large sheet pan. Bake at 400F for 15-20 minutes or until the fish is buttery soft. The exact bake time will depend on the thickness of the fish fillets and type of fish.
In the meantime, finely chop ginger, scallions, and chili peppers. Divide them into 2 equal piles.
When the fish is about 5 minutes away from out of the oven/air fryer, in a heavy bottom saucepan, heat up the avocado oil over medium-low heat. Cover the saucepan with a lid but leave a small gap open to allow some air to come-in.
Carefully remove the fish pouch. Let cool for 3 minutes before using a kitchen scissors to cut open the packet (be careful of the hot steam). Add the aromatics - ginger, scallions, and chilies - on top of the fillets and season with a pinch of salt.
Carefully pour half amount of the hot oil over each fillet and the aromatics on top. Serve hot and immediately.
You can also use any white flaky fish fillets such as halibut, bass, or tilapia.If your fish is thinner than 1-inch, reduce the cook time by 5 minutes. The exact cooking time will depend on the thickness and type of the fish.For make-ahead meal prep -To Prep: Enclose the fish with the seasonings (coconut aminos, salt, toasted sesame oil) inside of a parchment paper made pouch. Chop the aromatics - ginger, scallions, and chili peppers. Place 1 fish pouch inside of a gallon size freezer friendly ziplock bag. Place the aromatics on top and inside the bag. Store them flat in the freezer until solid.To cook: Remove the fish pouch from the freezer. No need to defrost. Leave the aromatics in the freezer until ready to use. Air fry the pouch from frozen at 320F for 25 minutes or bake the pouch at 425F for 25 minutes or until the fish is buttery flaky.Heat up the avocado oil, add the frozen aromatics on top of the cooked fish with a pinch of salt. Carefully pour the hot oil over. Be careful the splatter. Serve hot and immediately.