Ideally, you want the ingredients to come out of the dispensers on the far side of the board – if you’re using an iPhone, it can pay toreshuffle the level until you get your ingredient there.
It’s not the end of the world if you get an ingredient stuck on the empty hole notch: use the ingredient swapping guide on the tips page if necessary to remind yourself how to free a stuck ingredient. You’ll need two of the same candy on top, and one to the side to swap it out.
Unlock the candies on the opposite side of the board to the side you are bringing down the ingredient, then the chocolate is more likely to spread over that side of the board where you don’t have to worry about it.
The second ingredient will appear immediately after you clear the first ingredient from the dispenser closet to where you cleared it – try to have a vertical striped candy lined up ready to take it out.