Hard Tack

1 cup sugar                                                         
1/2 tsp flavoring
1/2 cup water                                                      
1/2 tsp coloring
1/3 cup Karo white

Boil to hard crack 300-310.  Don't have to stir.
Take off heat, add 1/2 tsp flavoring except cinnamon and cloves 1/4 tsp each.
Pour on buttered plate.

I didn't understand the third sentence.  
Mom rephrases it:
Take off heat, add 1/2 tsp flavoring (1/4 tsp each if you want to use cinnamon and cloves instead of flavoring).