Decided to make the above for the freezer. Recipe said cook on stove for 2 1/2 hours with lid but not completely covered. I brought it up to boil and then transferred to cook in the oven at fan 140 degs. Its been in an hour and a half, smells really good but the sauce is quite thin. I've moved the lid slightly so its not full on and hoping that will thicken the sauce. Think this will work? I suppose if I'm freezing it it might thicken up when its reheated. Any advice greatly appreciated.