To me it doesn't seem fair use and there is a monetary incentive for the youtuber to use the term Grana Padano to have more views and/or get paid more by Youtub

To me it doesn't seem fair use and there is a monetary incentive for the youtuber to use the term Grana Padano to have more views and/or get paid more by Youtube for views. But the whole point of a trademark is to reference the thing that is trademarked. As long as it is clear that he's not affiliated with them then I think it is fair. If he said unofficial guide to make Grana Padano. Or my recipe that's better than Grana Padano then it would be fine.