What a fun place! Ice cream is great and best served with a thin cookie. The half sandwich is really just two scoops of ice cream with a cookie broke in half to give you something to grip be ice cream with. Huge portions.
Only downside to this place is the extremely limited seating and no bathroom access. There is just one table inside and a bench outside. If you're going to be eating with your hands, which you will, it'd be nice to have a sick to clean them with.