You can use any white fish in this gratin recipe, and you can flex your chef muscles over the béarnaise sauce. Gently fry the leeks, carrots and onion in the butter until softened and starting to ...

Grate the cheese and add half to the sauce. Stir while the cheese melts and turn off the heat. Discard the bay leaf. Tear the ham into pieces and stuff them between the leeks. You dont need to be ...