Patrons dining at the outdoor tables realized right away what was happening, said Felice Robinson, administrative coordinator for Good Stuff Eatery (303 Pennsylvania Ave. S.E).
"How are you gonna miss the Secret Service?" she said.
The patrons outside saw the Obama girls getting out of the van and were immediately thrilled, whipping out their cell-phone cameras to get photos. "People were really happy to get a shot, and especially to see the girls," said Robinson. "Michelle has been here before, but this was the girls' first visit."
The First Family (sans Dad) ordered a Farmhouse Cheeseburger, Colleti's Smokehouse Burger and -- of course -- the new President Obama burger, topped with horseradish mayo, red onion marmalade, crumbled blue cheese and bacon.
Several members of Michelle Obama's staff joined them for lunch (and milkshakes!) at a 10-person table.
Mendelsohn had been to the White House earlier this year, for a kid-friendly cooking demo during the Easter Egg Roll.