The striped candies on the board are given to your advantage to clear the top area of the level.
The 1st and the 9th column have no ingredient exits. As such, if an ingredient reaches the bottom in one of those columns, it becomes impossible to win unless you use a free switch. This is also problematic as ingredients can spawn in those two columns.
Five colours allow the player to create special candies easily but the board layout is an issue.
The ingredients fall on moves 53, 46, 39, and 32 (provided that you make a move under one of the ingredient dispensers; if you do not, the ingredient will fall in on the next move) regardless if the preceding ingredient is cleared.
Remember that the ingredients must pass through the section filled with liquorice before reaching the exit row.
The ingredients are worth 40,000 points, which is more than the one star target score.