We had a nice leisurely lunch at Puku, an upstairs Cafe in old town Hanoi. While we were sitting there, one of the waitresses leaned over the balcony and called to someone down on the street. I asked her what was going on and she said she had called to a street vendor who was selling cakes, to ask her to wait downstairs. I went down with her and she bought some sticky rice cakes in a bowl of sweet soup from an old lady with a conical hat and a vietnamese backpack. Delicious.