Speaking as a Jew, while this is accurate, it’s not that common in the US among non-orthodox families. There was a poll of American Jews a while ago that found less than a quarter keep kosher.

That reminds me of the time I was in Jerusalem on Saturday (the Sabbath, so like everything was closed) and I stumbled upon a restaurant that reveled in being as un-kosher as possible: the main menu item was cheeseburgers and of course they were open on Saturdays. There were probably other things they did that rubbed people the wrong way because apparently the restaurant had been firebombed at one point.

And finding kosher beef. If you want a kosher burger, you usually need to buy the beef yourself and make your own burger.

Is it really that hard to find kosher beef in US restaurants? What about halal beef?

All the beef has to be kosher.

Not only that, but the kosher requirements (no dairy and meat together), depending on how kosher you are, also to apply to the plates the meal is served on, the equipment the meal is cooked on, and food storage areas; you need strictly segregated facilities, and washing between uses does not make it kosher. The requirements are strict to the point where rabbis have to regularly certify kosher restaurants as kosher.

I see. Thanks for the insight.

Why would you say that? The legal minimum is 51% cheese.

https://www.thedailymeal.com/eat/what-exactly-american-chees...