Quote Originally Posted by Asthepotthickens View Post
Can I take my near syrup that is very close to the proper density and re-boil it? Will it crystallize
YES, you can thaw it and recook it. It wont hurt a thing. It will only crystalize in time if it is over cooked. You need a hydrometer to get the correct density. the thermometer only gets you close. If you don't have a hydrometer leave the 'near syrup' in the freezer until you get one then cook it. If you take it out of the freezer it could get moldy in time even in the frig. Even then you can take the mold off and reboil it.

Hope this helps