Bring 8 Large Candles to William Pestle in Goldshire.
Hello, good sir! Do you have a moment?
My brother and I run an apothecary in Stormwind, and I'm here to gather large candles for their wax. Can you help me?
You can get large candles from kobolds, and I hear rumors that kobolds are infesting the Elwynn mines... the Fargodeep Mine to the south and Jasperlode Mine to the east. I suggest looking for candles in one of those places.