Place a large pan pan or skillet over medium high heat.
Add oil.
When oil is hot and shimmering, place salmon fillet in pan, skin side down. Sear for about 30 seconds.
Turn and sear the other side.
Add the ginger. Sauté briefly.
Add water. Cover the pan. Steam for 2 to 3 minutes, adding more water if necessary.
Uncover pan. Add teriyaki sauce.
As sauce reduces to a syrup, turn the fillet in it a couple of time to glaze.
When sauce becomes a glaze, add wine, scallion and a squeeze of 1 lemon. Discard used lemon wedge.
Turn the fish once or twice more until well-glazed.
Remove to a serving dish. Spoon remaining glaze over fish and serve with second lemon wedge.