Melt butter; stir in brown sugar, cornsyrup and salt. Bring to a boil, stirring constantly, than boil,without stirring for 5 minutes. Remove from heat, stir in soda and vanilla. Gradually pour over corn, mix well. Turn into two large, shallow baking pans. Bake at 120ºC for 1 hour, stir every 15 minutes. Remove from oven, cool completly. Break apart and store in tightly covered containers. Found this in some magazine a while ago, dont know which one any more! From Brigitte Sealing, Cyberealm BBS Watertown NY 315-786-1120