- Soften two leaves of isinglass in cold water for a few hours and wring them out before adding them to the mixture, or prepare 6gr of Agar Agar.
- Take a pot and heat up:
- 300gr of Aperol
- 200gr of red orange juice
- While the mixture is warming up, add the isinglass leaves or the Agar Agar and blend them with a spoon.
- Make the mixture cool down until it reaches room temperature.
- Filter the mixture with a strainer and put it in a siphon, then seal it.
- Keep the siphon upside down, charge a small gas cylinder and shake it for at least 30 seconds.
- Put the siphon into the refrigerator for at least 8 hours and leave it upside down.
- Shake the mixture once more before serving it.
