The Brunch Box Browse more: Recipes Ingredients 1 fluid ounce Montenegro amaro liqueur1 fluid ounce freshly squeezed grapefruit juice5 fluid ounces lager beer, chilled Steps Mix amaro and grapefruit juice together in a chilled Collins glass; top with beer. Previous recipe: Honey-Glazed Salmon Next recipe: Gluten-Free Blackberry Cobbler