The player is required to score at least 5,000 points per second (150,000 points / 30 seconds = 5,000 points per second).
There is limited space available at the start due to the two-layered icing. However, once it is all removed, it is practically impossible to fail the level, as due to the presence of four candy colors, cascades will be extremely plentiful, and as such, +5 candies will be very easy to spawn.
Strategy[]
Simply clear the icing and enjoy the chaos that ensues, occasionally making a move when cascades and special cascades aren't going off.