Sprinkle, then rub, both sides of the salmon steaks with salt, pepper and sage.
Melt the butter in a large nonstick skillet over medium-high heat. Swirl to coat.
When foaming subsides, add the salmon steaks
Fry the salmon steaks 3 minutes on the first side.
Turn to other side, lower heat to medium and cook until cooked through, about 3 more minutes.
Transfer the salmon steaks to plates, spoon the pan juices on top, and serve.