The Biggest, Blackest Pineapple

Set up a pourover (like a V60). On a fine grind setting, grind 15 grams of relatively neutral coffee and place in the filter. Combine the first four ingredients in a small pitcher. Add 1.5 oz water to wet the grounds. Slowly pour the cocktail through the coffee into the carafe below. Transfer to a jar and refrigerate. When you're ready to make the drink, add the lime juice to the jar. Chill two coupes with ice and dash some bitters on top. Swirl to coat and discard. Add the cocktail evenly between the coupes.