Ever cracked an egg and noticed a weird, white string strung over the golden yolk? That's a good thing! It's called a chalaza, and there are two of them. They can be found on both sides of the yolk, holding it at the center of the egg.
Using Vanilla Extract Versus Vanilla Beans
Your candy will be great either way.
How to Make Homemade Vanilla Extract
Store-bought vanilla extract is expensive; homemade vanilla extract is easy.