1 c. butter
1 (16 oz.) pkg. brown sugar
Dash salt
1 c. light corn syrup
1 (14 oz.) can sweetened condensed milk
1 tsp. vanilla

Generously butter 9 x 9 x 2-inch pan. In heavy 3-quart pan, melt butter. Add sugar and dash of salt. Stir thoroughly. Stir in corn syrup. Gradually add sweetened condensed milk, stirring constantly. Cook over medium heat, stirring occasionally, to 245 degrees (firm ball). Mixture should boil gently over entire surface for 15 to 20 minutes. Remove from heat and stir in vanilla. Cool completely. Cut with wet, sharp knife. Wrap in wax paper.

Add 2 ounces cut-up unsweetened chocolate with the milk.