St. Dalfour is the first company to have applied special concentrated grape juice from which the aroma and flavor was removed during the jam production, which made it possible to produce naturally sweet 100% jam without added sugar. This method has its origin with the grandmother of Mr. Kistner, the president of St. Dalfour. During the First World War, sugar was very limited in supply and quite expensive. Because the Kistner family owned vineyards and had access to extensive supply of grapes, Mr. Kistner’s grandmother made jam with concentrated grape juice instead of sugar. This is the origin of the world renowned St. Dalfour fruit conserve recipe.