Sweet potatoes are what we are really digging right now. No really! Sweet potatoes are the roots of the plant; so we really do have to be digging in order to get to them.
I planted the slips in March. A slip is a part of the plant where two leaves are connected. If you cut that part from the main plant and then stick it in water; roots will grow where the two leaves meet. Once the roots appear, you can plant it in the ground. Be sure to give it lots of room. I once had a 4 foot by 8 foot bed filled with leaves and vines. When they died back in the winter, I dug up over 100 lbs of sweet potatoes.
The leaves are edible and highly nutritious. They can be used in salads, stir-fries or frozen for your smoothies. Just be sure not to over fertilize this plant. Nitrogen will cause it to put too much energy into creating leaves and you will be left with nothing to dig up.
My favorite way to eat a sweet potato is roasted with butter. But for the holidays, we make the popular casserole. Here is a Paleo friendly version of a sweet potato casserole.