Grapefruit Sorbet, Campari Pop Rocks, and Angostura Bitters Ice Cream
For the Grapefruit Sorbet:
Combine the simple syrup, corn syrup, and stabilizer in a pot, and bring to a boil. Pour syrup mixture into a blender, along with grapefruit juice and salt. Blend on high for 2 minutes. Pour into a bowl set over an ice water bath. Once chilled, pour into an ice cream machine, and process according to manufacturer’s instructions.
For the Campari Pop Rocks:
Combine the Campari, sugar, and corn syrup in a pot, and cook on medium-high heat until the mixture reaches 135ºC. Pour onto a silicone baking mat and spread thin. Once cool, break into shards, and add to a food processor with Pop Rocks. Pulse until Campari shards are Pop Rocks size. Store in an airtight container.
For the Angostura Bitters Mousse:
Pour the heavy cream, milk, honey, sugar, and bitters into an iSi whipper, screw the cap on tightly, and shake vigorously for 1 minute. Charge with 1 nitrous cartridge and shake vigorously 1 minute more. Store in refrigerator.
To Assemble and Serve:
Arrange a ring of grapefruit supremes on the bottom of a shallow bowl. Scatter Campari Pop Rocks in the center of and around the grapefruit ring. Shake the iSi canister vigorously and dispense 6 pillows of Angostura Bitters Mousse in varying sizes in the bowl. Plate a quenelle of Grapefruit Sorbet in the center of the grapefruit ring.