Pancake Parade is a temporary event that is only available for a certain time in the game. During the event, some of the Bowls in the match-3 board are filled with Berries. Each time you make a match with the Berry filled Bowls, you collect them. For every level you beat, your Berries are used to make Pancakes. If you make the required number of pancakes before the Parade ends, you get the final prize! But there are other prizes along the way, too.
Some levels don't have berries.