Red Ice

is an object in.

Characteristics
Red Ice is a type of ice found in Link's adulthood in Zora's Domain, the Ice Cavern, and Ganon's Castle.

When Link returns to Zora's Domain, he finds King Zora frozen in Red Ice as a product of the freezing of Zora's Domain. He also finds the entrance to the Zora Shop blocked by the ice. While venturing in the Ice Cavern, Link finds Blue Fire, which can be scooped inside an empty Bottle and used to melt the Red Ice. Blue Fire can be used inside the cavern to gain access to Rupees, Treasure Chests, and a Piece of Heart. Link can also take some Blue Fire to free King Zora, which will then reward him with the Zora Tunic. Link finds one last time some Red Ice inside Ganon's Castle water barrier area.