It can be quite hard to clear the chocolate and it may spread itself across the board rapidly once the empty sachets on the board are destroyed, especially since the board's shape is a little bit awkward. The jellies are situated in a peninsula making them hard to clear.
Meringues decrease the play field if not destroyed.
Clear chocolates as fast as possible, then clear the meringues. It is fine to use combos. You need a vertical striped candy to plow through to the bottom, even better on the middle of the board. Single matching will be very difficult.
If you have the Jelly Fish (booster), the jelly fish will eat the jelly. Due to the fact that there are 3 jellys, the jelly fish still destroys the jelly, even thorugh chocolate. If you do this twice you'll complete the level.