Ingredients for 4 servings

  1. 1 large skate wing, curled, approximately 500 g (17.75 oz)

For the broth:

  1. 4 liters (4.25 qt) of seawater or salted water
  2. Thyme, bay leaf, black peppercorns, and 3 cloves
  3. 1 carrot and 1 onion, diced
  4. 1 splash of vinegar and 1 splash of milk
  5. 3 medium new potatoes (Ré or Noirmoutier), just wiped clean
  6. 25 cl (1.1 cups) heavy cream
  7. 2 large spoonfuls of wholegrain mustard (Pommery if available)
  8. Fine sea salt and freshly ground pepper