Question: Why not?
Answer: Hooch.
The making of illegal alcohol in prison is big business. To create fermentation you need two things, sugar and yeast. So sugar is often banned from being sold in prisons.
If you can't steal sugar from the kitchen, the main source of sugar for prison hooch is fruit or fruit juice. If you can't get fruit or juice, sugar can be obtained from lots of places, from frosting to candy to ketchup.
So where does the yeast come from?
Bread.
Hooch is usually fermented in plastic bags, and even toilets, by mixing water, bread and fruit and letting it sit for a week.
Sounds delicious!
