I hate making yeast starters. I want to make 5 gallons of wort and fill up a bunch of mason jars, and use these mason jars to make my yeast starters in the future. I also want to store the mason jars at room temperature.
I was thinking of heating a solution of star san to 140F and filling the mason jars with this solution. I would cool down the wort to around 140F before filling the mason jars. The reason for this of course is to prevent the non-pyrex mason jars from breaking due to the extreme change in temperatures. I would cap the mason jars and store them at room temperature.
Question: will this procedure work? I am making several assumptions; for example: star san at 140F sanitizes properly, wort at 140F can't become contaminated, and the mason jar seal is air tight and won't result in an infection at room temperature.