- 1 cup high-proof rum (preferably Smith & Cross)
- 1 cup spiced rum (preferably Sailor Jerry)
- 1 cup fresh grapefruit juice, strained
- 3/4 cup fresh orange juice, strained
- 1/2 cup fresh lemon juice, strained
- 1/3 cup Luxardo maraschino liqueur
- 1/4 cup simple syrup
- 2 teaspoons Peychaud's bitters
- 1 grapefruit, sliced into rounds
- 1 blood orange, sliced into rounds
- 1 lime, sliced into rounds
- 1/4 cup kumquats, sliced into rounds
- Fill 2 small freezer-safe shallow containers with 1 1/2″ hot water and freeze until solid to make giant ice cubes, about 4 hours. (The bottoms of clean half-gallon milk cartons work great.)
- Combine both rums, grapefruit juice, orange juice, lemon juice, liqueur, simple syrup, and bitters in a punch bowl.
- Unmold ice (dip containers in warm water if needed) and add to punch along with citrus slices. Serve punch in 6-ounce glasses filled with ice.
- Punch can be mixed 3 hours ahead. Chill.