Grandpa B's Peanut Brittle

 Ingredients:  3 cups sugar
                      1 cup Karo (corn ) syrup
                      1/2 cup water
                       3 cups peanuts
                      2 tsp baking soda
Stir together sugar, syrup and water in a 3-4 quart heavy pan over medium heat until it boils.
Stop stirring and cook to 280 degrees.  ( use candy thermometer ).
Now add 3 cups peanuts very slowly.  Peanuts should be room temp, not hot, not cold.  Cook until thermometer reads 300 degrees.  Watch carefully.  Remove from heat and add the baking soda.  Mix in and be careful as it bubbles up.  Now pour into 2 buttered 12 inch round pizza pans.  ( should have edges on the pans. )
Let cool and harden.  Once completely cooled, break into pieces.