Clean and wash the peppers and fry them in a coated pan with a little oil. Wash and clean the rocket and drain well. Clean the fennel and cut into very thin strips. Wash basil, dab dry and chop. Mix the rocket, fennel, pepper strips, basil and vinegar well in a bowl. Crush fennel seeds and peppercorns in a mortar. Wash the salmon fillet, dab dry.
Sprinkle the top first with salt, then with the fennel and pepper mixture and press the spice into the meat with your fingertips. Spread a non-stick ovenproof pan with a little oil and heat it up. Place the salmon with the spiced side in the pan and fry for 3 minutes until the fillet edge has a light crust. Place the pan in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: 2 settings) and bake for 3-5 minutes. Arrange rocket, fennel, bell pepper and basil on a plate. Place salmon fillet on top