I do this( I didn't check the link, but you're frezing w/glycerine right?) and it works for me, really a great feeling when it works the first time! Its like, "Yes, I cut my yeast cost to pennies and will have whatever I need on hand for long time."
"Did you ever kick a woman in the midsection while she was wearing a whalebone corset? I nearly broke my great toe. I never had such a painful experience." -Egbert Souse(W.C.Fields)