Though again, not everyone can cook on a grill.Making stuff for your D&D game isn't high end restaurant cooking. It is throws burgers and dogs on the grill for your friends. Believing that creating elements of play is hard and something only the pros can do is a self-imposed limitation.
If you want to sell your work or otherwise widely distribute it, then you would certainly be wise to try and hold it to a higher standard. But if you are just trying to have a good time with your friends, give yourself a break. Grill the burgers and enjoy them.
Sure you might have a small circle of friends that are great grill cooks...but not everyone can do it.
Millions of people would be lucky to even get the meat on the grill after dropping it in the dirt, grass and worse. Then they will burn themselves at least two or three times as they "try" and cook. And in the end they will have a couple of beyond chared rock hard lumps of what was once meat.
And that does not even count the couple hundred people that blow themselves up with their gas grills...and sometimes even kill themselves.