I'ts a cows milk Fetta, and the stirrer Herman, is an adapted orange juicer machine. The type that you would push an orange or lemon half onto a spindle.
I took the motor out of the original body (was a weird shape) and fitted into a piece of PVC pipe. and wired an on/off switch into the vat console.
will post some pics so you can see what i mean...just need the bit for it.