Here is something strange, I always put my syrup in the freezer just to check and see if anything freeze's, I have a refractometer but I still use the freezer just incase. I had 5 mason jars in the freezer in our fridge in the house, they were there for a few weeks, never froze, just got thick like Karen explained it.... roofing tar. I put them in the freezer in our garage... they are froze

This threw me for a loop when I opened the freezer door and saw it, never had it do this before.
Do I thaw them out and added them to syrup I am boiling? Or say screw it !!! and give them to the Neighbors lol