1 tablespoons vegetable oil – for oiling grill grates
lemon – cut into wedges (for serving)
Instructions
Preheat a grill to medium-high heat (about 400–450°F). For charcoal, build a two-zone fire so you have a cooler area to move fish if needed.
Pat the salmon fillets dry, then brush on all sides with olive oil. Season evenly with kosher salt and black pepper; let stand at room temperature for 10 minutes while the grill heats.
Clean the hot grill grates well. Using tongs, rub the grates with a folded paper towel dipped in vegetable oil until glossy and well oiled.
Place the salmon on the grill skin-side down over direct heat. Close the lid and cook until the skin releases easily and the flesh turns opaque about two-thirds of the way up, 5–7 minutes depending on thickness.
Slide a thin metal spatula under the fish and gently flip. Cook covered until the center is just opaque and flakes with gentle pressure, 2–4 minutes more, or until an instant-read thermometer in the thickest part reads 120–125°F for medium (thicker fillets may take up to 12 minutes total).
Transfer to a plate and tent loosely with foil to rest 3–5 minutes; carryover heat will finish the cooking and keep the fish moist.