It's always a good thing to know more about wild edible plants already growing in our surroundings.
If you can think of one, please post. I will start with Common Nettle or Stinging Nettle.
After cooking in salted boiling water, drain, cut in bite size pieces. Could be prepared as a side dish, served with fish, mixed with cooked potato,
or in making of corn bread squares, good in soups. Great alternative to spinach.