Candy Crush Level 216 Cheats, Tips,
Help, Strategy, Instructions and Objectives
How To Beat Candy Crush Level 216, Crunchy Castle
Those strange glass things are licorice swirl dispensers. If you break the meringue underneath them, the board starts getting flooded with licorice swirls, which isn't very conducive to collecting the candy orders you need, but it's not the end of the world.
You'll find that you get the orders pretty easily if you just match 3s and focus on the candy you need. Take the occasional opportunities for match 4s and match 5s, but don't go overboard. Avoid crushing the meringues and jamming up the boad with licorice swirls as much as you can...