Book/Source: The Hobbit
Disclaimer: I don’t own Middle-earth, however much I’d like to live there.
"Where did you spend the winter, Uncle Bilbo? It must have been awfully drafty in that big mountain..." All the children leaned forward, eager to hear more of gold and jewels and the strange songs the Dwarves sang.
"Oh, I am sure it wasn't; Dwarves are better builders than that! But I spent the winter with Gandalf and Beorn."
"Did you see more bears?"
"Some. And I began learning Sindarin properly from Gandalf - that's the language the Elves speak, you know."
"Was there much snow?"
"Oh yes, but we were quite snug in Beorn's hall. With plenty of honey cakes!"