Rose hips. Those little red/orange balls that are ripening up just now on a lot of rose bushes. Pick them, cut them up, dry or refrigerate, use for tea or soup. Drop into boiling water. Heating slowly will tend to destroy the vitamin C.
I debated saying a very large bottle of multivitamins and minerals.
Good point. My Vit C are rose hips based.......duh?
I was thinking about the extra minerals and multi, people didn’t eat processed breads, it was would have been substantial and whole grains (like that stuff we pay $5 a loaf for now, or make our own).
Mutton/cows probably would have been the most common meat, and root vegetables in the colder climates and a few other things in the warmer.
Here is an interesting article from the BBC, if you are curious.
http://www.bbc.co.uk/history/ancient/british_prehistory/ironage_intro_01.shtml
I know there are people who study these sorts of things, there must be lots of information out there.