I had to look up China grass. East Cooking and Tips channel says it's known as agar agar (now That one I've heard of!) It's a plant based gelatin derived from red algae & is a great gelatin substitute. Excellent source of calcium, iron, fiber & magnesium. No sugar or carbs. Available in powdered form or dried strands as in this video ~ Who knew!? GREAT cheese making video Muno's Kitchen!! Thank you for sharing!