Possible Clues:

• Mutton/onion/potato dish
• National dish of potatoes, mutton and onions simmered in water
• Writes his recipe for food
• Dish of meat, onions, potatoes etc
• Dish of mutton, potatoes, onions
• Dish causing turmoil in the Emerald Isle?
• For the rest, - I wish to make it in Ireland, of course
• Dish made with mutton, lamb or beef with potatoes, onions etc.
• National dish with mutton, spuds and onions
• Here one waters up the national dish