Bob Pastorio wrote:

I wonder if there's any other sort of device to do the same thing.

Pastorio

Yup - a fork! Just cream the butter softened with the milk, adding it a
little at a time... Takes a while, and works best with a little icing
sugar added. I've done it, but its a pain in the bum as it takes a
while. It's ok for slopping on apple crumble, but you won't get
anything whipable to shove in a cake.
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