My friend believed that chicken stock, or chicken essense was made by getting a bunch of chickens, and boiling them down in a big pot to create "Essense of chicken".
A childhood belief about general

others believed things like this
- I used to believe that if you buried a chicken bone in the backyard it would grow a chickenAnon
- When I caught chicken pox, I thought it was down to me eating too much chicken.— Helen
- i used to believe that Chicken McNuggets come from baby chickens.— Micky D =)
- I used to believe that all meats were chicken. I called everything chicken. :)— Girlfloyd
- I thought that eating chicken gave me muscles (chicken and muscles sound the same in Mandarin).— NG
- I used to believe when you had chicken pox, you turned into a chicken— Shirley