I dont know what your allergies are, Im not suggesting your diet.
All I am saying is that you can carry (what appears to be favoured in salicylate, amine & glutimate intolerant diet recommendations) unprocessed meats such as beef, veal, lamb, (fish maybe) and eggs, potato, lettuce, green beans, cabbage, celery, carrot, cucumber, asparagus, pumpkin, peeled zucchini and sweet potato over the kind of periods you would need to complete some pretty good walks in kiwi without turning it into dehydrated. It might mean huts for their kitchens instead of your tent which which I appreciate isnt everyones cup of tea.
Im presuming you cant eat out in the towns at the start finish of your walks either and would need full cooking facilities. YHA? For groups its often worth picking up a batch.
What did Biosecurity
have to say by the way?
Every four seconds, somewhere in the world, an Harlequin Mills and Boon is sold ... Wot ...