Cook one cup each potatoes and carrots, and one-half cup turnip, cut in fancy shapes, in boiling salted water until soft. Drain, add one-half cup canned peas, and pour over a sauce made by cooking two tablespoons butter with two slices onion five minutes, removing onion, adding two tablespoons flour, three-fourths teaspoon salt, one-half teaspoon curry powder, one-fourth teaspoon pepper, few grains celery salt, and pouring on gradually one cup scalded milk. Sprinkle with finely chopped parsley.