1 qt. heavy cream
1 lb. butter
1 lb. brown sugar
2 1/3 c. white sugar
1 pt. dark Karo
1/2 tsp. salt
1 tsp. vanilla

Mix sugars together and add Karo. Cut in butter and 1/2 of cream. Let come to a boil. As it stars to boil, add rest of cream. Cook approximately 1 1/2 hours or until soft ball stage, stirring constantly. When done, remove from heat. Add vanilla. Pour in buttered pan and place in refrigerator until firm or overnight. Cut and wrap in wax paper. While cooking, try some on ice cream.