The chocolate starts as a single square but can take over the board quickly. You need to remember that chocolate expands only if no chocolate is destroyed on the previous move. Plan your moves carefully to fight back and maybe even clear the chocolate.
On mobile, you can restart until the chocolate can be removed on the very first move.
The next ingredient will mostly appear after a previous ingredient has dropped off of the board. Work from the bottom. It maximises your cascading matches and might also help take care of the chocolate.
Horizontal striped candy and horizontal combinations help to clear entire lines of candies an lower all ingredients. Look for opportunities to form a stripe.