Ruth's Caramels

Directions

1. 1
   In a heavy saucepan, melt butter over low heat, add sugar and salt, stirring well.
2. 2
   Stir in corn syrup.
3. 3
   Slowly add condensed milk, stirring constantly.
4. 4
   Cook and stir over medium heat 12 to 15 minutes or until mixture reaches the firm ball stage, 244 to 249 degrees on a candy thermometer.
5. 5
   Remove from heat, stir in vanilla.
6. 6
   Pour into a greased 9x9 inch pan.
7. 7
   Cool and cut into squares.
8. 8
   Wrap in cut out squares of wax paper, twisting the ends.