Bring the ingredients down as far as you can with vertical moves before setting off the marmalade coated striped candy. These are really essential to keep towards the end of the game. However, make vertical striped candy if you aim to shoot the ingredients down to the bottom quickly, or, if that final candy on the bottom is blocking the exit, free a marmalade striped candy and mix it with another striped candy to clear the vertical column your ingredient is stuck in.
You will not need to worry about the icing on this level. It is there to intimidate you. Just be sure not to swap an ingredient onto an icing column by accident.