Note that the first four listed dishes and their names vary regionally, and are not common throughout the entire country.
Try some gorgeous soda bread, made with buttermilk and leavened with bicarbonate of soda rather than yeast. It is heavy, tasty and almost a meal in itself!
The days when potatoes were the only thing on the menu are long past, and modern Irish cuisine emphasizes fresh local ingredients, simply prepared and presented, and utilizes influences from many countries across the world. Ireland has also since embraced a cosmopolitan restaurant and food industry that has incorporated many novel varieties of cuisine. Common ingredients still include meat especially lamb, seafood, and dairy, and Western meat staples found elsewhere, such as chicken and pork, are also regularly served in Ireland. Today, these elements have been blended with other ethnic techniques and flavor profiles found outside of strictly traditional Irish cuisine. In many instances, restaurants that serve ethnic food are more plentiful and some would argue more appealing to locals than classical Irish fare. Thai, Italian, American, and Mediterranean influenced food is plentiful in Ireland's larger cities and is very good.
Only basic table manners are considered necessary when eating out, unless you're with company that has a more specific definition of what is appropriate. As a general rule, so long as you don't make a show of yourself by disturbing other diners there's little else to worry about. It's common to see other customers using their mobile phones - this sometimes attracts the odd frown or two but goes largely ignored. If you do need to take a call, keep it short and try not to raise your voice. The only other issue to be concerned about is noise - a baby crying might be forgivable if it's resolved fairly quickly, a contingent of adults laughing very loudly every couple of minutes or continuously talking out loud may attract negative attention. However, these rules are largely ignored in fast-food restaurants, pubs and some more informal restaurants.
Traditionally, tipping was never considered to be a necessity and was entirely optional. However, recently it has become common to tip up to 10% of the bill total. Some establishments will add a 10-15% service charge on top of the obligatory 13.5% Government VAT charge, especially for larger groups. If a service charge is levied, a tip would not normally be left, unless to reward exceptional service.
If you were unhappy with the service, then you would normally leave no tip.
Food is expensive in Ireland, although quality has improved enormously in the last ten years. Most small towns will have a supermarket and many have a weekly farmers' market. The cheapest option for eating out is either fast food or pubs. Many pubs offer a carvery lunch consisting of roasted meat, vegetables and the ubiquitous potatoes, which is usually good value. Selection for vegetarians is limited outside the main cities. The small town of Kinsale near Cork has become internationally famous for its many excellent restaurants, especially fish restaurants. In the northwest of the country Donegal Town is fast becoming the seafood capital of Ireland.