I made the most awesome BBQ pot roast on Monday. Cooked it for 4+ hours and then made gravy from sauce by adding a slurry of 1/2 cup water/2tbs wondra. The pot roast wasn't quite tender enough Sunday so we had the left overs last night that I cooked a little longer in the gravy. It came out perfect and the gravy was even better than the first night. Rich and thick with a great sweet/spicy BBQ flavor. Well I have tons of gravy leftover and think it would be awesome over meatloaf but the reality is I just won't get around to making meatloaf for a while as it is a crazy week and we have company coming. So can I freeze this stuff?? It is basically tomato sauce, lemon juice, worcestershire, brown sugar, vinegar, dry mustard, onions, garlic. However I thought the addition of flour might hinder proper freezing.... Any thoughts?