Champ

If you want to have a national dish, make it Champ? This favorite Irish dish goes down faster than the first pint of Guinness on a Friday night. Mashed potato with spring onions, butter, salt and pepper, champ is the perfect side with any meat or fish.

The word champ has also been adopted into the popular Hiberno-English phrases, to be "as thick as champ," meaning to be stupid, and to be "as ignorant as champ at a wedding," meaning to be uncultured or boorish (champ being a common everyday dish, not one befitting a banquet celebration).