In any given household, there is that one dish that makes a roast dinner. I’m not talking about the meat — that’s too obvious. I’m talking about a dish — usually a side — that is always on your table, even though its status may be less than canonical. It’s the dish you missed when you attended your fist Friendsgiving or Christmas lunch at your in-laws. It’s the one you didn’t realise wasn’t a given in every home. For me, it is the humble corn casserole.