The old can you brew it show on the brewing network tried to clone Arrogant Bastard a few times. The closest they ever came, I believe, was simply pale malt, Special B and Chinook. I haven't seen a recipe for the Double Bastard but I would assume it's just a scaled-up version of the same recipe. I would just use pale malt to hit your OG, Special B to hit your SRM and Chinook to maybe a hundred IBUs or so.
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