Malabar Spinach for serious preppers (a lot of vegetable matter/packed with nutrients).
(i.ibb.co)https://i.ibb.co/JtQj2Bt/IMG-8104.jpgaka Ceylon spinach, climbing spinach, gui, acelga trapadora, bratana, libato, vine spinach and Malabar nightshade.
It's not a real spinach and it has an earthy taste but it's full of goodness and such an efficient plant in that just one would probably equal a couple of rows of traditional spinach!
A good filler food in soup especially.
https://www.gardeningknowhow.com/edible/vegetables/malabar-spinach/growing-malabar-spinach.htm"The vine should be trellised and two plants are sufficient for most families through the summer and fall growing season.".