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Cows, don't matter if they hang 1 day or longer. They taste great either way. Bulls (even spikes) have never been good for me unless hung for a min of 4 days. My last spike only hung for 2 days, and then cut up. It was like any bull, not tender at all. That was a hard lesson. My wife is a phenomenal cook with any game meat, so it definitely had to do with lack of hanging time.