Something else I have yet to eat - Grass Jelly

I didn't try the grasshoppers at Loi Krathong or this. Grass jelly - the black jelly in the cups is a Thai dessert treat.  It is made by boiling stalks and leaves of a particular grass and is called Chao Kuai and considered a treat.  It is often served with Carnation Milk and I have seen advertisements for green and pink grass jelly - I think they add color to the milk.