Tasti D-Lite
Tasti D-Lite can be found in Lerner Hall. It is one of the dining options at Columbia.
Anti-TDL
It is disgusting. The ice cream apparently tastes like air?! For some reasons, girls love this stuff, probably because it's marketed as "low-calorie."
Two girls once tried to eat there for 3 days and nearly died while showing this off on The Bwog. To be fair, they did smoke some cigarettes, so they probably wouldn't have died.
Pro-TDL
On a more rational note... It actually isn't disgusting at all. It's a huge chain in the city, so this isn't some home-made Columbian concoction that tastes like crap. It's no Haagen Dazs, but it's perfectly fine - and the toppings help.