Dr Brown's Cel-Ray soda (or substitute lemon-lime soda)
Celery bitters or Angostura bitters
Directions
Finely chop one of the celery stalks. In a cocktail shaker, add the finely chopped celery, lime wedges and sugar. Muddle until the celery is crushed and the sugar dissolved. Add the gin and ice. Cover, shake, then strain into an ice-filled Collins glass. Finish with Cel-Ray soda, a dash of bitters and garnish with the remaining celery stalk. Serve.