Shake with ice and strain
3/10 Calvados (Un Trou Normand). (1 oz, 2.5 cl, 1/4 gills)
4/10 gin. (1 1/4 oz, 3.5 cl, 5/16 gills)
2/10 grapefruit juice. (1/2 oz, 2 cl, 1/8 gills)
1/10 Van der Hum (Sedgwick). (1/4 oz, 1 cl, 1/16 gills)
Shake and strain.
Serve in a cocktail glass (4.5 oz)
