Pop corn and make sure to get all of the old maid out.

Melt butter. Stir in sugar, syrup and salt. Bring to a boil, stirring constantly.

When at boil, let boil without stirring for 5 minutes.

Remove from heat and stir in soda and vanilla.

Pour over popcorn, mix well. Spread on pan and bake 250 for 1 hour. Stirring every 15 minutes.

Be careful of the syrup. It is very hot. If while stirring some gets out of the bowl, do not pick it up with bare hands. You will burn yourself.