Those like.. +1 foods might have been available. I don't know the dates on them.
The picnics and kaladim drinks are from Luclin.
The best stat food I can think of by the end of Velious was the
sandwich of foul smelling herbs, which I used as a range slot item for +50hp. This wasn't introduced until the end of velious, with the chardok revamp/shortly before Luclin.
Here is some additional information about food/drink I came across a while ago:
http://web.archive.org/web/200010112...ing/food.shtml