Champ

4 pounds potatoes, peeled and cubed
1/2 pound green onions (scallions), chopped
1 cup milk
2 teaspoon salt
4 ounces butter

Boil the potatoes until cooked.

Simmer the green onions in milk for about 5 mins.

Drain potatoes and mash.

Add the hot milk and scallions, salt, pepper and half the butter
and mix.

HINT: The secret of success to this Irish potato recipe is
making sure all the ingredients are kept very hot while you're
preparing it.