Tronky is a crisp shell filled with a chocolate & hazelnut cream with chopped hazelnuts. It’s pretty darn good. The shell is crunchy though a little bland, but the filling is rich with a slight chocolate flavor and a good crunchy from the fresh hazelnuts. The size is great, it’s easy to eat a whole one, you don’t want to eat half and save it for later! Each bar is less than 100 calories, so it’s a nice treat but not too much of an indulgence.