Level 1617 is the seventh level in Sundae Stables and the 379th candy order level. To pass this level, you must collect 70 frosting layers in 24 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.
The task shouldn't be hard because once you open up the liquorice locks, the magic mixers will replace the frostings with liquorice swirls, and that the frosting layers replaced will also count.