In a saucepan, combine the sugars, milk, syrup, butter, salt and peanut butter
over medium heat. Stir the mixture until the sugar dissolves. Continue stirring
until the mixture begins to bubble around the edges of the pan, about 12 minutes.
Add the pecans and continue stirring until the mixture thickens - about 8 minutes,
and it reaches the soft ball stage (when a small amount of the mixture is dropped
into a cup of cold water forms a soft ball). Remove from the heat and drop by spoonsful
onto wax paper. Let cool.
Lift the pralines off the paper with a thin knife.