Wash duck breasts and pat dry, cut skin several times. Heat oil in a pan. Fry the duck breasts with the skin side down for 3 minutes over high heat, turn them over and fry them again for 3 minutes.
Season with fennel seeds, cinnamon, pimento, salt and pepper. Sprinkle with vermouth and place on a baking tray. Cook in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 15-20 minutes.
Peel and finely dice the shallots and place them on the baking tray. Meanwhile cook the pasta in boiling salted water for about 8 minutes. Wash the asparagus and cut off the woody ends. Cut the asparagus into small pieces and blanch for about 3 minutes in boiling salted water.
Wrap duck breast in aluminium foil. Dissolve the roast with poultry stock and pour into a pot. Add cream and bring to the boil. Stir the starch and 2 tablespoons of water until smooth and thicken the sauce. Bring to the boil while stirring.
Season to taste with salt and pepper. Wash the basil, pluck 2/3 of the leaves. Melt butter. Toss asparagus, pasta and basil in it. Cut duck breast into wedge-shaped pieces. Serve the asparagus, noodles, duck breast and some sauce in portions garnished with the rest of the basil.
Add the rest of the sauce separately.