I've used this recipe many times. My grandmother used to make starch. She never kept it for more then one ironing day as it started to smell funny after a few days. It can be kept in the fridge for a couple of weeks and has to be shaken up before each use as it separates fast. I can still find the powdered Faultless starch and it is wonderful! Also Mrs. Stewarts's Laundry Bluing is sold in grocery stores here. Amazon sells it.