If I am making something new, I will also make something familiar and liked, so they don't go completely hungry. Beyond that, I stopped being a short order cook, so they get what I make.
They don't have to finish everything on their plates, but I will do the "You have to have X many more bites before you may be excused" routine. And while we were at F&W festival last week, I told my son that he had to try at least one new food item per day. He only had to take a bite or two, but he had to try something new.