I put the ground foam through the blender again and sieved it:

The end result is a fine ground foam on the right and a coarse blend on the left:

Yes, those are cake tins as it was all I could find to sieve it into!
I put the ground foam through the blender again and sieved it:

The end result is a fine ground foam on the right and a coarse blend on the left:

Yes, those are cake tins as it was all I could find to sieve it into!