San Sebastian

  • 1
    oz
    Gin
  • 1
    1/2 tsp
    Rum
  • 1
    1/2 tsp
    Triple Sec
  • 1
    tbl
    Grapefruit Juice
  • 1
    tbl
    Lemon Juice

Shake all ingredients with ice, strain into a cocktail glass, and serve.