I have a great idea for a unique candy recipe, but to achieve this I need to be able to make pop rocks. The pop rocks would be inside the candy. 

Doing some research I have learned that POP ROCKS have pressurized carbon dioxide gas inside each tiny rock. I would not have any problem trying batch after batch and getting the ingredients right to make these pop rocks. But it would be useless if I cant get the CO2 inside. 

So. Does anyone knows of an easy way of doing this at home? If not, what type of machinery do you need?