A hoppy, bitter, strongly roasted Foreign-style Stout (of the export variety).
BJCP 2008:
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Examples:
Rogue Shakespeare Stout, Deschutes Obsidian Stout, Sierra Nevada Stout, North Coast Old No. 38, Bar Harbor Cadillac Mountain Stout, Avery Out of Bounds Stout, Lost Coast 8 Ball Stout, Mad River Steelhead Extra Stout