Finman - any thoughts on why that is? Does it go off in some way? You can buy pollen feed has that been treated in some special manor?
If I was concerned about the loss of pollen I would have cut it out of the frame and added it - just as Cusswood mentioned - placing it up in a feeder would have been of serious consideration, or in a brood frame - whatever appeared to be most appropriate at the time. I would not have taken placement and temperature into consideration sufficiently - my poor poor bees, i love them really
Do not make a problem about pollen, and do not put bees to do things, what is not in the collection of their instincs.
Bees need pollen to get protein, and they store it next to brood area. Bees consume huge amount of pollen daily and they need it every day during brooding period. They need stores for bad weathers.
One box of brood needs one box of pollen.
Bees store pollen next to brood that young bees eate every second and make from it larva milk. A larva grows 1000 fold from egg to capped larva in 5 days. Then in pupa stage 2 weeks the brood loose 1/3 of its weight and a milk sac transform to a bee.
Now... Are you going to participate in that brooding process teaching a new way to bees, how to rear colony.
your duty as a beekeepers is to learn first what that wild animal do in the hive, but do not try to teach it like a dog or husband.
If you do not like what bees do, that hobby marriage will do not succeed.
About Cuswood's idea, that bees must eate their pollen in the feeder, and not from cells where they are naturally, what a heck...