> 3 ruby red grapefruit
> 2 (12 oz) cans grapefruit hard seltzer
> 3/4 cup triple sec
> Dash of bitters (optional)
> ice, for serving
From the grapefruit, squeeze 2½ cups juice into a large pitcher.
To pitcher, add the hard seltzer, triple sec, and bitters (if using). Refrigerate and serve over ice.