Finding a quick gluten free lunch can be hard. Most places have some form of sandwich. If you're lucky, you can get a salad that isn't very filling, or a stuffed potato that will put you to sleep for the rest of the afternoon.
The kiosk serves savory and sweet Brazilian-style crepes (which are a crispier than French-style crepes), made from their own blend of gluten-free flours from a mix of Doves Farm flours with rice and maize flour.
You can get the crepes to take away, but there are tables to sit outside next to the kiosk (if the weather's good, or you're feeling brave), where you can get a salad with your crepes. They also have coffee. Student discounts are available.
You can find Tupiniquim where Forest Road and Teviot Place meet Lauriston Place, across the street from the RBS.
("Tupiniquim" is a Brazilian-Portugese word for Brazilian, according to Wikipedia, by the way.)
UPDATE (28 Feb 2011): after being closed for a fortnight, the kiosks at Lauriston Place are now open again!
UPDATE (24 Mar 2011): a web site is coming soon, http://www.tupiniquim.co.uk/