Penuche Fudge

1 lb. light brown sugar
2/3 cup milk
1 T. butter
1 tsp. vanilla
1 pinch salt

In medium saucepan, boil milk, butter, and sugar for 15 minutes, or until it forms a soft ball in cold water. Remove from heat.

Add vanilla and salt and beat until it thickens and looses its sheen.

Pour into well buttered pan to cool. Cut into squares.