For this dough, you really do need to develop the gluten a bit. So I usually knead it at speed 2 on my KitchenAid (Medium slow) for 10 minutes with a 5 minute rest time in between. If you want it to be even more elastic, repeat the 5 minute knead and rest cycle one more time. If you are kneading by hand, you will need to double the kneading time. What you want to end up with is a tacky dough which becomes smooth as a baby’s bottom with just a bit of dusting of flour.