Recipe for Disaster/Freeing the Mountain Dwarf

Walkthrough
Items required: 316 coins, a bucket of milk, flour, an egg, a bowl of water, gloves (Ice Gloves recommended), and 2 Falador teleports (1 if you have ice gloves). Inspect the dwarf.

Go to Falador, and talk to the barmaid in the Rising Sun Inn next to the west bank. Ask her about dwarves and ale. She will offer to tell you the secret recipe for Asgoldian ale for the price of 200 coins. If you have the activated Ring of Charos, charm her. She will tell you to add a gold coin to an Asgarnian ale to get an Asgoldian ale. Buy four (4) (or six) Asgarnian ales from her (or go to the Toad and Chicken pub in Burthorpe and pick up the ales for free), then add a coin to each one as per the secret recipe.

Go to the tunnel under White Wolf Mountain (a Camelot teleport is useful for a short walk). You will see an Old Dwarf in the bar area. Talk to him. He will refuse to bake a Dwarven rock cake for you, but he'll mention the Rising Sun Inn.

Use the Asgoldian ales on Rohak. Quickly give them to him to get him drunk, or he will sober up and you will need to get more Asgoldian ales again.

He will agree to make you a dwarven rock cake for 100 gold. Give him your bucket of milk, egg, flour, and bowl of water, then put on your ice gloves before taking the rock cake; if you don't, you'll take some damage from burning your hands. You will need to cool it down before you can give it to the Dwarf back in Lumbridge.

If you have ice gloves, picking up the cake cools it immediately. Otherwise, you can go and kill an icefiend, while wearing gloves, which functions similarly to ice gloves. The other option is to leave it in the bank, though you will have to wait several hours for it to cooldown, so it is not recommended to do so.