West Ernest
•  ½ ounce white rum

- ½ ounce fresh grapefruit juice

- ½ ounce fresh lime juice

- ¼ ounce grenadine

- Can/bottle of IPA beer

- Crude Bitterless Marriage or Rizzo bitters

Combine all ingredients in a shaker with ice. Shake and serve over ice in a collins glass. Top with IPA and a couple drops of bitters. (Drink remaining IPA.)