Build, fill glass with crushed ice
1/4 oz creme de cassis (6 dashes, 1/16 gills)
1 oz gin (3 cl, 1/4 gills)
3/4 oz sweet vermouth (2 cl, 3/16 gills)
3/4 oz dry vermouth (2 cl, 3/16 gills)
Add orange slice
Serve in a highball glass (9.0 oz)







