2 oz of Gin
3/4 oz of St Germain (or Elderflower Cordial)
3 oz of grapefruit juice
1/2 oz of Lime Juice
1 dash of bitters
1 dash of bitters
1 twist of grapefruit peel
Shake vigourously with ice, strain on ice, serve with expressed grapefruit peel and lavender sprig