Stores sell sturdy plastic jugs that the milk bags fit into snugly, so it basically pours like a pitcher. You just snip a small corner off the top of the bag once it’s inserted into The jug. The jug lasts forever, though it does get funky over time with any dribbles of milk that make it between the bag and jug.
Oof. WaPo wants an email address to access an article a subscriber gifted access to. Here is the archived version instead https://archive.is/3jOgi