[thedoc (OP)]

Dallas Broughton  asked the Naked Scientists:
   
Dear Chris
 
I love listening to you on the Redi Tlhabi radio show in South Africa .
 
Please would you mind answering my question below?

How could I make vodka jelly shots that last a long time? Of course I know how to make vodka jelly shots, but I don't know how about making the last a long time.

How long do you think an alcohol jelly shot could last, if it is sealed in a sealed vessel (Plastic shot glass)?

Do you think I might need to add in some kind of chemical?
 
Your advice would be very much appreciated.
 
Thank you for taking the time.
 
Best regards

Dallas Broughton

What do you think?