Colcannon

3-4 medium potatoes, peeled and cut in quarters
2 tablespoons milk or light cream
1/4 teaspoon salt
1/8 teaspoon pepper
2 cups chopped cabbage
2 tablespoons butter or margarine
1/4 cup chopped onion
2 tablespoons butter (for frying)

Cook potatoes in boiling water till tender; drain, reserving water.
Place in a large bowl.
Mash with hand masher till well-mashed.
Add milk, salt and pepper and beat till fluffy.
In the same saucepan as potatoes were cooked in, cook cabbage in reserved potato water for 6 to 8 minutes, until tender.
Drain.
Meanwhile, melt 2 tablespoons butter in frying pan and saute onion until tender.
Add mashed potato and cooked cabbage to the onion.
Heat throughly, stirring constantly.
Place in a heated serving dish.
Serve hot, topped with butter.