1Combine butter, brown sugar, syrup and salt. Bring to a boil, stirring constantly; boil five minutes; remove from stove and add baking soda and salt; stir in. Pour over 15 - 20 cups of popped corn in 2 - 3 roasting pans. Bake at 250 degrees for one hour, stirring every 15 minutes. Cool completely and package. Be sure to stir every 15 minutes. ENJOY!!