The chefs are inspired by the taste of Italy in episode 10 of Perfect.
Do not over mix the ingredients. The more you mix the tougher and more solid the gnocchi will become rather than light and fluffy pillows.
Leave the potato to cool before adding the egg yolks; otherwise it will start cooking rather than binding the potato and flour.
Marking one side of the slightly flattened gnocchi with the back of a fork gives them a more professional finish.
Try flavouring other ingredients such as parmesan or spinach. Make sure to wring out the spinach well first.