Quickly destroy most of the waffles. After opening up the cannons as a result, use the horizontal striped candies to your advantage - start trying to clear the popcorn.
Keep in mind that the striped candy only spawns once every three moves. Use the intervals to destroy the remaining waffles, most likely bringing down the first two ingredients and spawning the third one.
After that, you should not only keep using the striped candies dispensed from the candy cannons, but also try to make as many special candies as possible by yourself - it's highly recommended that you create wrapped candies next to the popcorn squares.
After popping the popcorn squares, you can combine the yielded colour bombs and the third ingredient will be brought down.