Famous Irish mash.
In a large saucepan cover the potatoes with water. Cover the pan and bring to the boil. After 15-20 minutes check if the potatoes are cooked by spearing with a fork.
Drain well and mash with a good old fashioned masher. Add the butter, cream, salt and pepper and stir to combine. Add more liquid if required for a creamy consistency. Finally stir in the spring onions.