Roast the pine nuts in a pan without fat until brown, take them out and let them cool down. Clean the cauliflower, cut into florets and wash. In a large pot, boil up plenty of salted water with milk and lemon juice. Add the cauliflower and cook for 10-12 minutes
Peel the garlic and cut into pieces. Clean, wash and drain the rocket. Slice off a few shavings from the cheese to sprinkle on top. Grate the remaining cheese. Puree the rocket (except for a little garnish), pine nuts, garlic, oil and cheese in the universal chopper. Season to taste with salt, pepper and sugar. Lift cauliflower out of the water, arrange with pesto, sprinkle with remaining rocket, pine nuts and parmesan slices