2, add water to boil in the pot, add a spoonful of edible and cooking oil, put the sweet potato leaves scalded for about 10 seconds, do not take too long, quickly fished into the icy water to cool, squeeze the water dry, divided into a small ball, placed in a plastic wrap wrapped, drain the air inside, put into a plastic bag, put into the refrigerator to freeze to save can be.

3, sweet potato leaves (perennial trailing herbs) also known as groundnut leaves, that is, the leaves on the stems of sweet potatoes during the growth process.

4, generally eaten in the fall after the sweet potato is ripe on the ground seedling stem tip of the young leaves.