You know there's a vast swath of Jewish Americans who don't keep Kosher to that extent right?

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There's an entire cuisine theory about how immigrants had to modify their food after coming to America because of available ingredients. And how that doesn't make it any less authentic, it's just changed the category of what's authentic. Trying to gatekeep what is and isn't authentic gets ridiculous fast, because how far back do you go? "Authentic" Italian food doesn't have tomatoes because they came from America, etc.