If you are having clumping problems, this may be caused by moisture in the air.
You may need to install a DE-humidifier in the room.
We now install a silica gel packet in every unit of powder we sell, however, this may not cure the problem of a humid powder room, or moisture in the airline, it does insure that the powder is good until the can is opened. Try taking an old silica gel packet and heating it in an oven to 140 f, for 30 mins, and placing it in a plastic ziplock bag. As soon as you open a unit and only use a partial amount, change over the silica gel packet.
You may like to 'fluff up' the powder by using an old fashioned flour sieve, and running the powder through it immediately prior to coating.
It certainly makes a huge difference on a cake!
