Molasses Pull Taffy

Combine sugar, molasses, water and vinegar in heavy 3 quart saucepan. Cook over medium heat, stirring constantly until sugar dissolves and mixture comes to a boil. Add cream of tartar and cook to very hard ball stage (260 F). Remove from heat; stir in baking soda and butter. Pour into buttered shallow dish. When cool enough to handle, pull it with the hands, until it is porous and light colored - takes about 20 to 30 minutes. Cut into 1 inch lengths and chill for a few minutes to harden. Wrap individual pieces in waxed paper, if desired. Yield: 10 dozen 1 inch pieces.