The fastest composts are made from a mix of materials having a carbon
to nitrogen ratio of 30:1, kept moist as a wet but not dripping
sponge, and chopped up to provide more surface area for the process.
As soon as the center of the pile cools turn the outside to the
center.
Meat in quantity can create problems but a little here and there is no
big deal other than attracting a few scavengers.
Anything that does not break down the first time through can be sifted
out and added to the next pile.