If you're like me, then you often times forget to close your brown sugar box to make it air-tight. When that happens, the moisture in the brown sugar evaporates and it hardens. Before I discovered this trick, I used to take my giant block of hardened brown sugar and shave off grains with a knife. Needless to say, that was laborious and just downright inefficient. Now, I break off a lime-size chunk and stick it in my citrus squeezer, whose powerful squeezing capabilities will turn that hardened sugar into sand-like grains with just one squeeze.