Step 1

In a small bowl, whisk together peanut oil, vinegar, green onions, soy sauce, ginger, brown sugar, sesame oil, chile flakes and garlic.

Step 2

Arrange salmon fillets in a wide, shallow dish and pour marinade over them to coat evenly.

Step 3

Cover and refrigerate for 4 to 6 hours.

Step 4

Prepare a grill for medium heat cooking, oiling the grill grates as needed.

Step 5

Remove salmon from the marinade, shaking off any excess.

Step 6

Arrange salmon and peppers on the grill grates.

Step 7

Grill salmon, flipping once, until fish is just cooked through and flakes easily with a fork, about 8 to 10 minutes. (Alternatively, wrap each fillet in foil to form a packet and grill for 20 to 25 minutes.)

Step 8

Grill peppers, flipping frequently until soft and evenly charred, about 8 minutes, then thinly slice.

Step 9

Garnish grilled salmon with sliced peppers and reserved green onions before serving.