Aged Bamboo

Ingredients

• One 1-liter oak barrel (see Note)
• 16 ounces Amontillado sherry
• 16 ounces dry vermouth
• 1/2 ounce orange bitters
• 1 teaspoon Angostura bitters
• Ice
• Lemon twists, for serving

Steps

1. If the barrel is new and dry inside, fill it with water and let stand until watertight, about 24 hours. Drain.
2. Using a funnel, fill the barrel with all of the liquid ingredients. Let age, tasting a sample once a week, until the cocktail has taken on a rounded but not overly oaky flavor, about 1 month.
3. Strain the cocktail through a coffee filter–lined funnel into a glass container and store indefinitely.
4. To serve, pour 3 ounces into an ice-filled cocktail shaker and stir until chilled. Strain the drink into a chilled cocktail glass. Garnish with a twist.