I am frequently buying raw milk in bottle, which needs to be boiled for pasteurization. So far I always poured it in a pot, boiled it, and transferred it to a clean bottle after.
Since my old supplier dried up I need to travel a bit to get it, so I am thinking about ways to preserve it a bit longer, preferably 2-4 weeks in the fridge.
Would it be a good idea to put the glass bottles as they are in a water bath and wait until the milk starts bubbling? This way I won't need to do all the transfers and there won't be any air contact, it would be basically water bath canned. Would it hold for 2-4 weeks this way in my 4C° fridge? Any downsides?
I was also considering pressure canning, but I think this would be over kill for what I am trying to achieve here, which is slightly longer fridge life.