From the perspective of Jewish law, it's 100% the responsibility of the individual to avoid situations they know might compromise their faith.
Madness string 101300
He is a bad cook. A good cook knows the food isn't about him, it's about the people eating. You've given him feedback, but the dickhead still tries to force his Ranch & Ballsack Potato Abortion on you. If he doesn't like that no one wants to eat it, shrug.