The New Zealand Railways Magazine, Volume 12, Issue 1 (April 1, 1937)
Scrub thoroughly and carefully bake as many large potatoes as required. When done break each potato open near the middle, make a hole with a spoon and insert a good lump of butter and a teaspoon of grated cheese well mixed with salt and pepper. Return to oven for a few minutes and serve very hot. Very good for cold day lunch or supper.