Hi, I've tried to make canele for several times. first time it looks great. but after that, it always pop up so high, expanded, and stuck. I always baked at 180C/180C. maybe it's too low and I'm going to try 200 or 250C later. another question is, just curious, why to chill the batter over night? what will happen if i don't chill it? and when it comes out of the fridge, should I steer and mix the batter well. because there is a thick layer of butter floating on the batter. thanks for your kindly reply