Gradually add in the flour,1 cup at a time. Add in the last 1/2 a cup and start to knead the dough with your hands until the last 1/2 cup of flour is incorporated in. Turn the dough out onto a floured surface and continue to knead the bread for about 7 minutes until it is smooth and elastic. Add a bit more flour as you need to during kneading. The dough should still feel sticky, but it will not stick to your hands.