Applied Science, a YouTube channel, had a video about making carbonated candy a la Pop Rocks: https://www.youtube.com/watch?v=qsSwvmNEr0Q

Here's a broad outline:

1. Craft a mixing chamber that can hold 600 psi (40 bar), has an inlet for CO₂, and a rotary pressure seal with a mixing/whisk attachment.
2. Make a hard candy (280 °F/137 °C) on the stove
3. Preheat the chamber to avoid the candy solidifying too quickly
4. Pour molten candy into a chamber
5. Close and pressurize to 600 psi.
6. Mix (with drill or whatever) for 3-4 minutes
7. Let cool while under pressure
8. Depressurize and open chamber, hammer candy out.
9. Enjoy.

Applied Science, a YouTube channel, had a video about making carbonated candy a la Pop Rocks: https://www.youtube.com/watch?v=qsSwvmNEr0Q

Here's a broad outline:

1. Craft a mixing chamber that can hold 600 psi (40 bar), has an inlet for CO₂, and a rotary pressure seal with a mixing/whisk attachment.
2. Make a hard candy (280 °F/137 °C) on the stove
3. Preheat the chamber to avoid the candy solidifying too quickly
4. Pour molten candy into the chamber
5. Close and pressurize to 600 psi.
6. Mix (with drill or whatever) for 3-4 minutes
7. Let cool while under pressure
8. Depressurize and open chamber, remove candy with mallet, chisel, and/or hammer.
9. Enjoy!