At a guess I'd say Stout has darker malt grades.Porter is also often more alcoholic and uses less roasted barley? Very similar though.
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FeralCatMan Unusual disease collector.,
Wed 4 Feb 2009, 21:07,
archived)
More or less, though stout is typically stronger.
Want Bartender Time gentlemen please..,
Thu 5 Feb 2009, 15:42,
archived)