寒天 (kanten) is used to make Japanese jelly.

Basic recipe:
寒天 2g : Liquid 200 – 300ml : Sugar (depends)

*200ml will make it quite hard, and with fully water will be quite smelly of 寒天, so add quite a bit of sugar
*300ml make it better then hard, I prefer 300ml hardness.
* used peach syrup:water – 80ml:120ml, not too bad

寒天かぼちゃ
350g mashed pumpkin
50g sugar
300ml water
4g 寒天
Steam pumpkin, add sugar and mashed well. Boil 寒天 with water and take white stuff out after boil, around 2mins until it’s clear. Mix together with pumpkin, leave it cool before put into fridge.