If you destroy the magic mixer too early, the level will be impossible as you need some more icing for the order.
In mobile version, the magic mixer that spawns regular icing ate up the liquorice swirls, which the level will be extremely hard to beat without boosters (unless if a mystery candy gives you more swirls). This is because the liquorice swirl order can only be obtained by clearing all liquorice swirls available in the board play.
The orders are worth 6,000 points. Hence, an additional 14,000 points is required to earn one star.