I don't know what makes 仙草, but if you boil agar with water/sugar, then leave in the frig it is similiar to 仙草. You can find agar in Chinese store. They look like large clear noddle.
I don't know what makes 仙草, but if you boil agar with water/sugar, then leave in the frig it is similiar to 仙草. You can find agar in Chinese store. They look like large clear noddle.