Put first 3 ingredients in a large pan. Boil until hard ball stage. Then add in the butter and peanuts. Cook until it is golden in color. Remove from the heat. Add in the vanilla and soda. As soon as you do this it will start bubbling. Mix it fast then pour it onto a well greased cookie sheet. Do Not Spread it out, or it will not be as light and fluffy. Let it cool and break into pieces. Then enjoy!