1 1/2 ounces Gin
1 ounce Cointreau or triple sec
1 ounce pinapple juice
1/2 t. grenadine
1 pinapple slice
In a shaker half filled with ice cubes, combine the gin, Cointreau, pineapple juice, and grenadine. Shake well. Pour into an old-fashioned glass and garnish with the pineapple slice.