The chocolate starts as a single block but can take over the screen quickly. You need to remember that chocolate only expands if no chocolate is destroyed on the previous move. Plan your moves carefully to fight back and maybe even clear the chocolate.
The next ingredient will most likely appear after a previous ingredient has dropped off of the board. Work from the bottom of the screen. It maximises your cascading matches and might also help take care of the chocolate.
Horizontal striped candies and horizontal combinations help to clear entire lines of candies and lower all ingredients. Look for opportunities to form striped candies.