Kvasir and the Mead of Poetry
Long long ago, when the War of Gods came to an end, the gods assembled to set up a peace treaty for both god tribes. They came together in a great hall. There lay a huge vessel. All gods had to chew strawberries and spat the resulted liquid into the vessel. And the liquid formed Kvasir.
Kvasir was the wisest creature in the cosmos. He could answer all the questions in the cosmos. There Kvasir grew up and started his life as a traveller. He travelled around the Nine Worlds to spread his knowledge. On one occasion, he came into a house of two dwarves who finally changed his life. The dwarves turned out to be greedy who wanted to brew a magical liquid which contained power.
Then they killed Kvasir and stored his blood in huge vessels. The dwarves mixed the Kvasir's blood with honey from which they created the Mead of Poetry. Anyone who drank the Mead of Poetry would have the power to persuade other people with ease.