At The Perennial, mixologists Chad Arnholt and Claire Sprouse use drought-resistant fennel as the base for this refreshing, low-alcohol cocktail. Slideshow: More Fall Cocktail Recipes
In a medium bowl, whisk the grapefruit juice with the sugar and brandy until the sugar is dissolved. Chill the grapefruit cordial for 15 minutes.
In a large measuring cup, stir the fennel juice with 2 ounces of the grapefruit cordial. Pour the drink into 4 tall ice-filled glasses and top with the cider. Garnish with fennel fronds and serve.
The grapefruit cordial can be refrigerated for up to 1 week.