Tenzing Coupe Cocktail: The Crushed Velvet by Nick Kokonas

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1 oz Lucano Amaro
1 oz Luxardo Bitter
1 Dash Fee Brother's Rhubard bitters
2 oz Iwate Kura Bakushu Oyster Stout
2 oz Bereche Brut Reserve

Build in wine glass over ice.  Stir. Garnish with lemon twist.