Storing Porto after it's opened

[Auburnwine]

Last night we finished a De Bortoli Show Muscat (second cousin of a porto) that we had corked and kept in the refrigerator for a week and a half. It remained absolutely luscious (think "liquid pralines"), with no hint of decline.

Someone more experienced than me could suggest a maximum length for retention, but I would imagine that your porto would keep for that length of time and perhaps longer.

Oh yes. Having the Muscat a bit cooler than room temperature was pleasant and interesting.