The "Jameson is Catholic, Bushmills is protestant" myth is one I grew up with, though I was always skeptical, perhaps because the myth even extended to "circular bottles" vs. " square bottles" of Irish.

The “Irish Whiskey Divide” Has Persisted Forever. It’s Time We Reckoned With What’s Really Behind It.
This St. Patrick’s Day, let’s share a shot and put an old myth in its place.
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