Soften gelatin in cold water. Combine sugar and hot water. Boil to a soft ball stage (236-238 °F). Add gelatin and salt; beat until stiff (this may take 20 minutes or so). Add vanilla. Beat thoroughly.
Pour into an 8″ x 8″ pan which has been dusted with powdered sugar. Allow to stand until stiff enough to hold its shape. Cut into strips. Remove from pan. Cut into squares and roll in powdered sugar.
If you are wanting to roast them over a fire, double the amount of gelatin. You’ll also need to let them set out overnight so they dry out a bit.
My first batch turned out to be a gooey mess b/c I gave up with the beating. It seems like it takes forever for them to get stiff.