Cardiff and South Wales - great food, not overly fancy wanted

Hi,

We'll be in Cardiff with our 2 and a half year old daughter in late November. We plan to take a day trip or two around south Wales. Our daughter is used to dining out and is very well behaved, but we don't want to go someplace inappropriate. We're interested in all kinds of food (although I don't eat much red meat) and would appreciate any and all suggestions.

thanks in advance.