Mark Knoller has it correct in his tweeting, so I'm not sure where the misinformation orignated.
Via The Hill:
(Not sure why they have it located in Alexandria...)
ETA: He also says: "Lunch play-by-play. Press Pool reports Obama ordered a swiss mushroom burger with chili and cheese cooked medium. Paid cash."
I don't know why I find this level of detail appealing but I do.
The President also bought burgers for some in the press corps (apparently the ones who wanted them).
Apologies for the edits. I didn't want to make new posts for every comment and then managed to make a bunch of typos...