The cold weather blew in to join us at the harvest Thanksgiving dinner. We had our first snow of the season and our first bio-butter: biodiesel which solidified due to the cold. No, we did not spread it on the dinner rolls. And fortunately, we did not put it in the car. A day before it was a reddish liquid. A night of cold temperatures brought our biodiesel to its knees. There are techniques out there (I need to do my research) to keep it liquid during cold temperatures but at least it doesn’t gum up injectors (like pure veggie oil) in such frigid circumstances.