Sweet Milk Grass Jelly

Sorry, but I couldn't find any details about a food called "sweet milk grass jelly" in United States restaurants. Do you mean "sweet grass jelly"? If that's the case, here's some information about this Chinese dessert:

Sweet grass jelly, sometimes called "grass jelly", is a Chinese sweet and sour dessert that can be found in some Chinese restaurants. It gets its dark green color and grass-like texture from the grass juice or leaves of the Platostoma palustre plant, a type of wild cultivated grass from China.

The dessert has a unique, slightly bitter taste and the texture of grass. It is sweet, chilled, and has a bright green color, often served with shaved ice. In Taiwan, grass jelly is part of a traditional dessert called xiaotang shu, or "summer dessert", which is a sweet soup that Chinese people eat to cool off during the summer. Besides grass jelly, other ingredients of the soup include mung beans, tapioca, barley, and water chestnuts.

I hope this information helps you.