Powder Keg Certification

The Powder Keg Certification allows you to use and buy Powder Kegs. Melt the ice in front of the Goron Powder Keg Shop go in and speak to Medigoron. He will give you a Powder Keg and tell you to set it by the boulder in front of the Goron race track before it blows up. Then go back and speak to him so you have access to Powder Kegs.