Chu Jelly

Chu Jelly is an recurring item in The Legend of Zelda series. It can be obtained by killing members of the ChuChu species. A common task in the games is to collect enough Chu jelly to make some sort of a potion.

The Legend of Zelda: The Wind Waker
Chu Jelly is kept in the Spoils Bag.
 * Red - Used to make life potions.
 * Green - Used to make magic potions.
 * Blue - Used to make life & magic potions.

The Legend of Zelda: Twilight Princess
Unlike in Wind Waker, Chu Jelly can be used in it's natural state. In addition, there are also "beta" Chu Jelly found, although they don't have any effects.
 * Purple - Has a random effect.
 * Red - Acts as a life potion.
 * Blue - Acts as a maximum life potion.
 * Yellow - Can be used as lantern oil.
 * Rare - Can be used to increase attack power and restore all life.
 * Green - Unknown (possibly acted like a magic potion since magic was removed from the game).
 * Black - Lose one life (heart).