Ingredients: sweet potato noodles, water, salt, white flour Method 1. First, add salt, water and a dough of white flour, which is neither soft nor hard, and let it rest for 20 minutes.

Take another sweet potato noodle and add an appropriate amount of white flour and knead it into a dough as above. It should be neither soft nor hard. Let it rest for 20 minutes.

2. Next, roll the white dough into a round cake shape, wrap a small portion of the sweet potato dough into it, press it flat, and roll it into thin sheets by hand and cut into thin strips.

I am still lazy and just use a dough press to press out the finished product.