- 6 ounces grapefruit juice
- 8 ounces orange juice
- 2 ounces gin
- 2 ounces sweet vermouth
- 2 ounces Campari
- 2 cups ice
- Pour fruit juices, gin, vermouth, and Campari into a blender. Add ice and blend on high power for 30-40 seconds until the ice has broken down. The mixture will be thick and icy; if it is still liquidy, add more ice and blend again.
- Divide slushies into glasses with orange bitters on top, if desired. Serve immediately with straws.