Cook the fennel in sparkling salted water for 10-12 minutes. Take out, cut in half lengthways, put in an ovenproof dish and keep warm.
Peel and fillet 1 orange. Squeeze the other 2 oranges.
Mix the egg yolks with 10 tablespoons of orange juice and whisk creamy over a hot water bath for 4 minutes, then fold in the melted butter. Season the hollandaise with salt and pepper, pour over the fennel halves and grill for 3 minutes.
Then decorate the fennel with the orange wedges, nut halves and the fennel green.
Put the rocket and the halved tomatoes in a bowl. Shake a sauce out of the oil, vinegar, syrup and shallot cubes. Mix these with the salad. Serve immediately.
Sufficient as a starter for 4 people; as a vegetarian main course with baguette for 2 people.