Strategy You've only got one ingredient to move, but you face a few challenges. The easy one is getting the ingredient down through the left portion down to the bottom. The hard part is the right hand side as you have chocolate fans and 2 locked in pieces that will prevent you from getting your ingredient through the exit at the bottom. If you can unlock either of the pieces at the bottom from the start, go for it. If you can make a powerup on the right hand side, that is always helpful. Otherwise, you will need horizontal striped candies to shoot down the chocolate on the right side to get your ingredient through.
Here you can find a walkthrough video for Candy Crush Level 158
Tip: before the chocolates starts to form make sure that your ingredients are already placed in the last 2 boxes below the chocolate maker. When your fruit is positioned in the right bar last 2 boxes then start making stripped candies on the left and hit it. It will start to fall thru.