Shake with ice and strain
1/2 Drambuie (1 1/2 oz, 4.5 cl, 3/8 gills)
1/4 Sweet orange juice (3/4 oz, 2 cl, 3/16 gills)
1/4 Sweet lemon juice (3/4 oz, 2 cl, 3/16 gills)
1 egg (1/2 oz, 1.5 cl, 1/8 gills)
Serve in a medium size glass and dash with Champagne
Serve in a cocktail glass (4.5 oz)