One of the things that bugs me about bottling beer is the whole process of heating the priming sugar with water, letting it cool, and waiting for it to be ready before I mix in the beer into my bottling bucket. It's also marginally annoying to have to weigh out corn sugar on the scale each time
What I was thinking of doing was mixing sugar at about 8oz/pt into a largish amount of water, boiling that, pouring it into canning jars, and then using regular canning techniques (steam) to sanitize and seal. I could probably start the mix all in the jars to start with too, provided the whole thing got up to temp (depending on the gravity, I might need a pressure steamer). Then on bottling day, it's just a matter of figuring out how much mixture I need, shaking the jar, and pouring the proper amount into the bottling bucket for whatever volume of carbonation I'm shooting for.
I know people have done this with wort to make starters less annoying. Anyone ever try this with priming sugar? I'll play with it (concentration being a big deal, if I could get an easily-mixed liquid, the denser the better since that's more space efficient) on my own, but it's always best to get guidance early.


