Melt butter in saucepan. Add sugar, corn syrup and cold water. Stir until
sugar is dissolved. Cook over medium heat stirring occasionally. Cook until
300 degrees F. At about 275 degrees F add chopped pecans.
Pour onto prepared pan and let stand for a few minutes.
Break Hershey bar into pieces and lay on toffee. Allow to melt and spread
Sprinkle with finely chopped pecans.
When cold, break into pieces.
Store in tin container with wax paper between layers.