For the pesto, roast the almonds in a pan without fat for about 5 minutes while turning, remove. Wash the dill, shake dry, pluck flags from the stalks and chop roughly. Finely chop the almonds, dill, oil and horseradish with a hand blender.
Season to taste with salt, pepper and lemon juice. Bake bread in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 8-10 minutes depending on the desired browning. Clean and wash the rocket, spin dry and, depending on the size, cut it into smaller pieces if necessary.
Stir 4 tablespoons of pesto and 2-3 tablespoons of water until smooth. Use the rest of the pesto for other purposes. Arrange rocket and salmon on 4 plates and drizzle with the pesto sauce. Cut bread into slices and add.