Gratin Dauphinois is a classic French potato dish that you will find in many bistro restaurants in France. Traditionally there’s no cheese and instead, knobs of butter are added to the top helping the potato starch mixed with the cream render that brown gratin look and flavour. So you can leave the cheese out if you’re a purist, but I think it takes it up a notch. It’s such luscious velvety potato dish making it irresistible and difficult not to go for seconds.