Here it is:
Mema's Divinity Fudge
2 C sugar
1/2 c water
1/2 c white karo
1 tsp vanilla
1 egg white
Boil sugar, water, and karo until syrup reaches the softball stage (use your candy thermometer!). Meanwhile, beat white of egg until stiff and add to it, 1/2 of the syrup, beating constantly.
Cook remaining syrup until it reaches the hardball stage, then add slowly to the first mixture. Add vanilla. And here's the part where you must use discretion: Beat until stiff. This will be very shiny at first, just keep mixing until less shiny and thickens greatly; sometimes this takes several minutes. You can test it by spooning a little dollop onto wax paper; if it hold it's shape fairly well, then you're all set. (You do not want to beat this until it has zero-shine and has a dry, sandy texture. This ought to be smooth.)
Once you have beat/mixed it to the proper stiffness; working quickly, spoon it in little round dollops on a piece of wax paper (or you can spread it in a pan like pan fudge). It's gets harder to work with, so be hasty while spooning it out. And kids and adults alike seem to appreciate the little curl on top of the dollop if you can manage it. :-)
After you're done, it's always nice to have someone on hand to help with the cleanup. The beaters, particularly.