2 oz. of wheatmeal, 1 oz. of rolled oatmeal, 1 egg, 1/2 oz. of oiled butter, 1/2 lb. small sago, 3 eggs, 1 large Spanish onion, 1 dessertspoonful of mixed powdered herbs, 1 oz. of butter, pepper and salt to taste, and a little milk if needed. Swell the sago over the fire with as much water as it will absorb; when quite soft put into it the butter to melt, and, when melted, mix in the oatmeal and wheatmeal. Grate the onion, and whip up the eggs; mix all the ingredients together, not forgetting the herbs and seasoning. The whole should be a thick porridgy mass; if too dry add a little milk. Butter a PUDDING basin, pour into it the mixture, place a piece of buttered paper over it, tie a PUDDING cloth over the basin, and steam the haggis for 3 hours.
The Allinson Vegetarian Cookery Book, by Thomas R. Allinson (Year 1915)