I haven't had much luck with cabbage,but I get green onions year round.
I hate dolma,but I'm hoping to dry grape leaves or use them as potherbs,as I certainly have enough of them.
Right now, the
rabbits eat them, but there are plenty of other things they can eat and I cant.
Drying might deal with a common issue among wild harvested leaf crops. Most are said to be good "when young" ,but get "too tough" to palatable,as they age.
Wet heat (stewing,canning), acid(pickling) ,fermentation(again,pickling), mechanized mastication (juicing,smoothies) or dry heat(dehydration) can all contribute to making rough foods edible.