Chowhound has detailed the origins and appeal of In-N-Out’s 4x4 burger, a secret menu item featuring four patties and four slices of cheese. Once unlimited in size, the burger was capped at 4x4 after ...
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What you get when you order a 4x4 at In-N-Out
The 4x4 is one of In-N-Out's most well-known secret menu items. Here's what you'll get if you order one on your next visit to ...
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