2 1/2 c. white sugar
1/2 c. boiling water
1/2 c. cream
1/2 stick butter
pinch salt

Cook in open kettle or heavy pan. Put sugar, salt and boiling water in pan; stir over low heat until dissolved. (Don't let boil at this time.) Add cream; stir only one time. When candy starts boiling, cut butter in slices and drop into candy. Cook until it says crack on the thermometer (290°F). Pour on buttered marble or dish. Pour 2 tsp. vanilla on candy. Pull candy when cool.