In a large pot, place the can of sweetened condensed milk with the label taken off, in the pot and cover with water. Cook on high until water comes to a boil, then turn on medium/high for 4 hours, only adding water to keep the can covered.
In a large pot, place the can of sweetened condensed milk with the label taken off, in the pot and cover with water. Cook on high until water comes to a boil, then turn on medium/high for 4 hours, only adding water to keep the can covered. Carefully open can and pour into pie shell. Cool pie in refrigerator.
