Never Fail Fudge

Directions

1. 1
   Combine first 5 ingredients.
2. 2
   Stir over low heat until blended.
3. 3
   Bring to a boil over moderate heat.
4. 4
   Be careful not to mistake air bubbles for boiling.
5. 5
   Boil slowly, stirring constantly for 5 minutes (soft ball stage).
6. 6
   Remove from heat.
7. 7
   Stir in chips and vanilla until chips have melted.
8. 8
   Turn into a buttered 9 x 9-inch pan.
9. 9
   Let cool.