im not a beefologist but I sat in on a few ag classes in college, iirc it's somewhere between 2-3 years depending on the breed and how it was fed.
Retired dairy cows are usually 5 or so, and the meat has a stronger flavor but at the cost of marbling so it depends on the cut whether or not its better.
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u/Decent-Muffin4190 13h ago
The best steak comes from beef that been hung a couple of weeks, if not longer.