Hmm - this is always a big challenge - trying to get enough food without doubling he amount of stuff you're carrying!
Well, you've said no hunting, but assuming this is summer, you actually need to carry very little in the way of food. Assuming water is unlimited, you have a vast range of wild foods available to you - green plants, such as nettles, docks, good king henry etc make lovely soups - and if you're carrying some flour/salt/baking powder premixed, you can always make damper/bannocks to go with.
There are also lots of berries about this time of year - if you're lucky you can find fruit easily, and again with flour/water you can make a pastry - campfire pies rule!
If you can identify mushrooms, this is another huge area to be foraged.
Roots are another source of tasty foods - dandelions, burdock, silverweed etc - especially if you've got some mushrooms too - all these thinly sliced make a great stir-fry! Oh, and you've got some green leaves too - they'd go well
Maybe you'll also get some nuts if you're lucky - hazel, beech, walnut can all be found if you know the area, and make a tasty snack - especially if you've got some wild fruits, such as blackberries to mix in too!
OK, so thats an ideal menu, and sometimes its never going to be easy to find all the things I've just mentioned. However, you will always find
some of the above, and if you can make just one meal in 5 days from foraging, then thats a 1/5th of your food weight reduced. Which might be quite a lot of weight.
And yes, it will take up quite a lot of time finding all these things to make a meal - but then if you're camping in one place, expanding your bushcraft skills, and not hiking long distances, then you've got all the time you need to collect tasty foods!
(Bear in mind also that some foods are easier to forage over
longer periods - for example acorns, which need some time to process.)