Stuck on the last two...
4d In cookery, servedplain with parsley garnish (1,2,6,6,) i have .....A ?a ?a?t?e ?h?t?l ... all i can get is ..... à la maître d'hôtel......but this is master of the hotel!
17d Of a region of ancient Egypt west of Nile delta (7) N?t?i?n