I get buffalo kidney and liver and chicken liver from a natural meat supplier. They also have buffalo tongue and tails and chicken livers,feet, hearts and gizzards. I have another local supplier for tripe, turkey necks, hearts, gizzards, really pretty much anything you can think of. I pay top dollar though. I keep meaning to try a local ethnic market in the hope of bargains. There are also several co-ops operating in the area. Have you joined the carnivore-feed supplier list? You might find some leads on there.
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