Run a forum search...  there are several recent threads/ posts on burly making, recepies to methods.
As to a garbage insinkerator.. ok on what u intend, maybe.. but serious burley I and others use a garden mulcher

just be aware that insinkerator are designed to be used with running water... you're likely to clog it up :)

Mulcher/pellets , all covered in older and recent posts..
Some use diff type pig pellets for different reasons others like me use different type chicken pellets, more for thickening, consistency in the final product...
Read the old posts, lotsa info.....rather than expecting each persaon with their own thougfhts and reasons to type the whole lot out again
I use my old ryobi electric garden mulcher...
When one uses burley one generally uses bait.. burley bait gets expensive, so I buy wet fish, and use bait fish I catch and frames etc... Freeze store... when the bait freeze runs out of room  IO 'convert' the stored stuff into 2L burley bombs, generally around 20 to 25 bombs at a time...
So dont want to screwing around with mincers that choke on a semi frozen KY head, or the insinkerator jamming up, and something that doesnt blink at a sack or reject muscles and shells.
Even if I was only going to make say 5 or 10, would still use the mulcher....
Clean up sounds major... its not....covered in old burley threads/ posts/ discussions.