I bet it would be tasty, it just may be yeasty for the first few pours. I was moving a few weeks ago and put a beer in the keg to make it easier to move than the carboy, but it wasn't finished. I essentially used the keg as a secondary and serving vessle. The first few pints brought up some yeast, but it seems to have settled. The beer pours slowly too, so I think the diptube is a bit clogged, so that's something to consider.