Blue Potion

The Blue Potion first appeared in A Link to the Past and is used to restore both Health and Magic. Just like Red Potion and Green Potion, Link needs an empty bottle to carry it in. Since A Link to the Past, it has also appeared in Ocarina of Time, Majora's Mask, and The Wind Waker.

In Majora's Mask
In Majora's Mask, Link can either purchase a bottle of Blue Potion from the Ikana Canyon Business Scrub for 100 Rupees, or give a Magic Mushroom to Kotake at the Magic Hags' Potion Shop. The witch will then use it to create Blue Potions and sell them for 60 Rupees each. They cure the Curse status that the Blue Bubbles inflict.

In The Wind Waker
There are two ways to obtain the Blue Potion in The Wind Waker. The first is to collect 4 Boko Baba Seeds from killing Boko Babas and then giving them to Hollo, who will then make a Blue Potion. The second way is to collect 15 Blue Chu Jellys from Blue ChuChus and trade them to Doc Bandam on Windfall Island. He will use them to make a Blue Potion and give Link the first sample for free, and from then on will have it for sale at 60 Rupees a bottle. Just like in previous games, it will fully restore Link's health and magic meter.

In Twilight Princess
There are also two ways to obtain Blue Potion in Twilight Princess. The first way is to slay a Blue Chu, found rarely throughout Hyrule and several dungeons, especially the Lakebed Temple, and scoop up its remains into an empty bottle. The remains of a Blue Chu act similarly to the blue potion would, restoring all hearts. The second way is to simply buy the potion itself from the Goron's son in Kakariko Village or from Malo Mart in Hyrule Castle at a reduced price. In Twilight Princess however, the Blue Potion only restores hearts, as the magic meter was not part of the game.