Peel your oranges and add them to a one gallon plastic bag along with the fruit cocktail.
Add 16 ounces of water to the bag, seal the bag and run it under hot water for 15 minutes.
Wrap the bag in a towel and stick it someplace nice and warm for the next 48 hours.
Check on your bag after 48 hours is up. At this point it should smell pretty disgusting and look like it's about to explode.
Open the bag and let the gas out and add the ketchup and sugar cubes. You should add between 40 and 60 sugar cubes, but the more sugar cubes you add the higher the alcohol content will be.
Seal your bag back up, run it under hot water for 30 minutes, wrap it back up in a towel for the next 72 hours.
During this final 72 hour span make sure you check your bag at least once a day, open it up, let the gas out, seal it back up, run it under hot water for 15 minutes and then wrap it back up in the towel.
After 72 hours is up just separate the fruit mash from the wine and enjoy your prison wine!