(Sounds like a new diet craze!) Wanted to post a heads-up for two very good grocery items that are back in stores after a hiatus.
Russo's has Amish Country Roll butter (I think that's the official name), which I haven't seen there for many moons. They sell it in 1 and 2 pound chunks, for 3 dollars/pound (which is a pretty good price for any butter, let alone a really good one). I've never tried cooking or baking with it, as it is VERY salty (maybe 1.5 times as salty as supermarket salted sticks); I just put it on toast. but damn it's good. You can sometimes see striations of different shades of yellow in the butter, which somehow makes me feel a little closer to the land. Seems like an artisanal product from way back (although for all I know the Amish Country farm could be a vast industrial operation; but I doubt it), as opposed to the more boutique-y brands (which I like) from Vermont, etc.
In the orange category, Whole Foods now has Valley Cove navel oranges, which are just about the best eating oranges I've found anywhere around here. They're only available a few weeks a year, but they are super-juicy and sweet (but not weird candy-sweet; they still have some acid). One tip: I don't think they're waxed, so you can't really stock up on them, as they will rot after a few days on the counter -- I just buy a few at a time. Also, I don't think all the Whole Foods branches have them, but I know I've seen them at River Street Cambridge and the Washington Street store in Newton. Enjoy while they last.