I currently play a druid almost 7th level currently. my DM brought a feat to my attention that does exactly what you are talking about, tho i cannot recall the name of it off the top of my head. one of the pre reqs was brew potion which I already have.
the jist of the feat allows you to prepare foods with magical potion-like qualities. creating food of this nature also made it so that the food does not spoil. I found this to be a great way to utilize my character in a non-combat way. for example, inviting the captain of the night watch to a great dinner that 1) "uplifts" him then and there , and 2) with a doggie bag for the road with differing effects is a great bribe for any 0'dark-30 deals you may need to make.
I'll try to find the name of it and get back to ya.
thus far I have come up with these ideas of stuff to make macaroons of extended vitality (got the extended spell feat too) and granola bars of barkskin, Boss Ton's Baked Beans of longstrider, (insert creativity here). and of course the healing stuffs great too. pralines of restoration will prove handy when exploring those haunted crypts.
