Rognons de veau à la moutarde

Method

1. 1 Peel back the membrane and remove all of the white core of the kidney, as the core is the part that has the strongest urine odor.
2. 2 Soak the kidneys in cold milk for 1 hour, then rinse and pat them thoroughly dry.
3. 3 Cut into 2 cm slices, then pan-fry in very hot butter for exactly 90 seconds and remove immediately.
4. 4 If the kidney remains in the kidney for more than 2 minutes, it becomes rubbery and secretes a foul-smelling fluid.
5. 5 Sauté the shallots and mushrooms for 5 minutes, then pour in the cognac and ignite until the alcohol is completely burned.
6. 6 Pour the fresh cream and mustard into a pan, then add the kidney and cook for 30 seconds, then sprinkle with parsley.

With an appliance

• Air fryer 35 min

  Replace step 3: lightly spray oil onto the patted kidney pieces, fry in a preheated air fryer at 205 degrees for 4 minutes, flip at the 2nd minute and remove immediately; steps 5 and 6 remain for making the sauce in the pan.