I swear I had to have recced this, but there's always the chance that circa May, I had some kind of sad hallucinogenic break with reality--though I remember writing the rec. but I can't find it, and it took me ten minutes to remember more about the story than "there was junk. And John fixed things for older people. And something about a casserole".
This is how we get summaries from sga-storyfinders. Right there. Junk and old people and casserole.
Junk Cheap by devildoll - SGA, Sheppard/McKay, and very, very, very funny. And fun! And John fixes things! For pastry!
(also, I don't think the story actually contains casserole. That's so sad.)