If you have an ingredient land on top of a column of licorice or a column with a chocolate fountain, you’ll need to swap it across columns. The third and fourth ingredients appear immediately after the last ingredient is taken off the screen, so focus all your energies on clearing whatever is on there instead of waiting for a new ingredient: the new ingredient will appear in the same column the last one exited from.
The first ingredient will probably be the easiest to clear, as the chocolate hasn’t taken control, after that, keep an eye on the surprise bags for wrapped candy and striped candy that can help. Focusing all your moves on a few columns, unless making special candy combos in other columns, is the best strategy for this level.