I know this is probably controversial..
When i make chicken stock, i simmer in the slow cooker for 24 hours, till the bones are soft, then i strain it off and my chooks get the left over solids, minus the onion that i fish out.
They go NUTS! I figure this way at least nothing goes to waste.
I do the same thing, except I don't bother fishing out the onions.
I figure once you're a cannibal, onion breathe is the least of your worries!
