"This fairy will fly from your pouch and heal all your wounds the moment you lose your last heart. It's easily mistaken for a firefly at first, but it glows in the daylight as well as night."
— In-game description

Fairies are items from The Legend of Zelda: Breath of the Wild. They are cooking ingredients and curative items. They restore Link's health by refilling five Heart Containers. Link may use it manually or just die and the Fairy will restore Link's five hearts. Fairies will only appear if Link has two or fewer Fairies in his inventory. They usually appear near Fairy Fountains in groups of four or on top of the Great Deku Tree. They can be occasionally found by cutting grass, or may randomly spawn alone in particular places such as one of the bridged islands on the path leading to Rito Village.

Unlike past games, Link can store fairies in his pouch without the need of a bottle. Fairies can be used as ingredient for recipes when cooking for additional yellow Heart Containers, or to create Fairy Tonic. However unlike other ingredients, the Fairies themselves are not cooked as they fly off after the dish or elixir preparation is ready. According to Beedle, Fairy Tonics are made from cooking their dust. Chef Aurie Taamu mentions the potential use of fairies in cooking in a section of his book.