Knead the Pasta Dough, begin gently folding the dough on itself, flattening, and folding again. It will be extremely soft at first, then gradually start to firm up. Once it's firm enough to knead, begin kneading the dough. Incorporate more flour as needed to prevent the dough from sticking to your hands or the counter. Slice into the dough with a knife; if you see lots of air bubbles, keep kneading. The dough is kneaded when it forms