Lon Lon Milk
Lon Lon Milk from Ocarina of Time
Lon Lon Milk is a restoring item from Ocarina of Time and The Minish Cap. It can be used twice, healing five hearts each use.
Ocarina of Time
Lon Lon Milk can be obtained with a Bottle by beating a minigame, or bought by 10 Rupees. If Epona's Song is played near a cow, it will fill an empty bottle with Lon Lon Milk.
The Minish Cap
After unlocking Lon Lon Ranch, Link can buy Lon Lon Milk from Malon in Hyrule Town for 100 Rupees.