sentence: one serving based on the original recipe consists approximately of : 1 tablespoon rolled oats , soaked in 2 -- 3 tablespoons water 1 tablespoon lemon juice 1 tablespoon cream 200 gram apple ( about one large , preferably a sour variety ) , finely grated and mixed with the above directly before serving optionally topped with 1 tablespoon ground hazelnut or almond the original recipe used sweetened condensed milk instead of cream , a compromise due to hygiene concerns regarding fresh milk products in 1900 ( bovine tuberculosis etc. ) , before pasteurisation and refrigeration became commonly available .